KT 45ph DS lop 10 NC

<span class='text_page_counter'>(1)</span>Họ tên: .................................................................. Lớp: 10C2. Kiểm tra 15phút, ngày tháng 2 năm 2014. Bài 1.( 8,5 điểm) Giải các phương trỉnh, bất phương trình và hệ bất phương trình sau: 3 x 2  2 x  8  0  a.  2 x  3 x  5 ; b. x 2  4 x  12  2 x 1; c. x  1  x 2 2 x  1; d.   4  3 Bài 2. (1,5 điểm). Cho phương trình: Giải:. 2x  4 x . x  x 1 2 x 1  1. .. 2. 8  2 x  x m (1) . Tìm m để (1) có nghiệm:. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. 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Họ tên: .................................................................. Lớp: 10C2. Kiểm tra 15phút, ngày tháng 2 năm 2014.

<span class='text_page_counter'>(2)</span> Bài 1.( 8,5 điểm) Giải các phương trỉnh, bất phương trình và hệ bất phương trình sau: 2 x 2  5 x  12  0  a.  x  1  x  4 ; b. x 2  3x  4  5 2 x ; c. 3  x  3  x  x  2  ; c.   2  3 Bài 2. (1,5 điểm). Cho phương trình: 1  x  3  x  nhất Giải:. x 1 x 2x  1  1. .. 3  2 x  x 2 m (1) . Tìm m để (1) có nghiệm duy. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. 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Họ tên: .................................................................. Lớp: 10C2. Kiểm tra 15phút, ngày tháng 2 năm 2014.

<span class='text_page_counter'>(3)</span> Bài 1.( 8,5 điểm) Giải các phương trỉnh, bất phương trình và hệ bất phương trình sau: 3x 2  2 x  8 0  a.  2 x  3 x  5 ; b. 2 x 2  3x  5  x 3; c. x  1  x 2  1  2 x ; d.   4  3 Bài 2. (1,5 điểm). Cho phương trình: nghiệm: Giải:. 2x  1 6 x 2x  3  2. .. 3  x  5  x  15  2 x  x 2 m (1) . Tìm m để (1) có đúng hai. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. ............................................................................................................................................................................................................. 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