đề ôn thi vào lớp 10 môn toán, đề tham khảo 5

Đề 5

 
  − +
          
( ) ( )
! "  "  !A = − +
#$%&'()*)+"
,-./ 0$%&1( 2 0
.$%&.3
"4567892
 
" 
x y
x y
+ =


− =


:892*

)*)"(! ;6*

*

<=(
*

"

*

+*

"
*

+
>?7@A7/B ;!8C/BA781A7 ;
D!8C/BE751EE/F'3G/F'751EE?
3H2IJ0<%&/F'3/BKL M<N3O%&/F'3
KL M#7@9!/F'3I$%&3EG/F'K$O
<
<# PNIQRP8C #PS< 
I PN3
P( <S(

"
<
D<#T8C@U8C1PNV,-37'3
P*N'IW8C@U<XY'ZET8C@[ZI-37
'3IW8C@ \P*R] \N'R<
UP]Z?378^ 8C@<
_&P \N]R`<Z`%#%#IWP]<