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Sagot :

Réponse :

A= (x+5)(9x+8)

=9x²+8x+45x+40

=9x²+53x+40

B=16x²+16x+16

= 4x*4x+2*4x*4+4*4

=(4x+4)²

C=11(3x+10)

=33x+110

D=(10x+10)(x+14)+(-15x-3)+(10x+10)

=(10x+10)(x+14-15x-3)

=(10x+10)(11-14x)

E=(1x+8)(1x-8)

=1x²-64

F=4-38x+81x²

=81x²-38x+4

=9x*9x-2*9x*2+2*2

(9x+2)²

G=(5+12x)²

=25+120x+144x²

H=4x²-64

=(2x+8)(2x-8)

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