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Sagot :

Bonjour,

A= (2x+ 5)(4x+ 3)=

8x² +6x +20x +15=

8x² +26x +15

B= (3x−6)(2x−4)=

6x² -12x -12x +24=

-x² -24x +24

C= (x+ 2)²=

x² +4x +4

D= (x−5)²=

x² -10x +25

E= (x−10)(x+ 10)=

x² -10² = x² -100

F= (3x+ 4)² =

9x² +24x +16

G= (5x−6)(5x+ 6)=

25x² -36

A=8x^2+6x+20x+15
A=8x^2+26x+15
B=6x^2-12x-12x+24
B=6x^2-24x+24
C=2x +4
D=2x-10
E=x^2+10x-10x
E=x^2+0
F=6x+8
G=25x^2+30x-30x-36
G=25x^2 -36
^2 ça veut dire au carré

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