Kiem tra dai so 9 chuong 1

<span class='text_page_counter'>(1)</span>Họ và tên: .............................................. Lớp: 9C. KIỂM TRA 1 TIẾT -1. Môn: TOÁN Thời gian: 45 phút. ĐIỂM. LỜI PHÊ CỦA CÔ GIÁO. C©u 1: ( 3điểm) Tính x để căn thức có nghĩa: 1 x 3 a. x  3 b. C©u 2: ( 3điểm) Thùc hiÖn phÐp tÝnh a. 225 : 9 . 256. 4. d. 2  3x. ( 2 √ 3+ 2 √ 5 ) √ 3− √ 60. b.. c. 2 1 − √ 32+ √ 72 2. √. C©u 3: (3 ®iÓm): Cho biÓu thøc:. 7 c. x  2 2. d. A=. 2 ( 1+1√ x + x −1 ) : x −2√√xx +1. 2. 9 −2 √14 9+ 2 √ 14 + √ 7− √ 2 √ 7+ √2 ; với x 0; x 1. (. )(. 2. ). a.Tính A biết x = 16 b. Tìm x để A < 0 1 c. Tìm x để A có giá trị bằng 2 Câu 4: (1 điểm) Tìm số x nguyên để biểu thức Q =. √ x+1 nhËn gi¸ trÞ nguyªn. √x− 1. ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. ..

<span class='text_page_counter'>(2)</span> ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. .. Họ và tên: .............................................. Lớp: 9C ĐIỂM. KIỂM TRA 1 TIẾT -2. Môn: TOÁN Thời gian: 45 phút LỜI PHÊ CỦA CÔ GIÁO. C©u 1: ( 3điểm) Tính x để căn thức có nghĩa: 2 x 7 a. x  5 b. C©u 2: ( 3điểm) Thùc hiÖn phÐp tÝnh a. 324 : 36 . 49. 9. 1 2 c. 1  x. b.. 3. d. 3  7x. 5 2 2. . 5. 2. c.. √ 48 −3. √. 16 +2 √ 75 3. 1  B   x  2 x  C©u 3: (3 ®iÓm): Cho biÓu thøc: a.Tính B biết x = 9 b. Tìm x để B > 0 1 c. Tìm x để A có giá trị bằng 3 Câu 4: (1 điểm) Tìm số x nguyên để biểu thức Q =. 40.  8  2 15   8  2 15      5  3   5  3   d.. 2. 1  1 x : x  2  x  4 x  4 ; với x  0; x 1. x1 x  1 nhËn gi¸ trÞ nguyªn.. ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. . ................................................................................................................................................................................................................................................................. ..

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