Réponse :
salut ;)
Explications étape par étape
factoriser :
G= 4x²-9 - (2x-3)²
= (2x-3)(2x+3) - (2x-3)(2x-3)
= (2x-3)(2x+3-2x-3)
= (2x-3)(0)
= 0
F= -(2x+5)²+1
= 1² - (2x+5)²
= (1-2x-5)(1+2x+5)
= (-6-2x)(6+2x)
H= -x²+2x-1
= ( -x - 1)²
E= (2x-3)²+(2x-3)(x+1)
= (2x-3)(2x-3+x+1)
= (2x-3)(3x-2)
bonne chance :)
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Réponse :
salut ;)
Explications étape par étape
factoriser :
G= 4x²-9 - (2x-3)²
= (2x-3)(2x+3) - (2x-3)(2x-3)
= (2x-3)(2x+3-2x-3)
= (2x-3)(0)
= 0
F= -(2x+5)²+1
= 1² - (2x+5)²
= (1-2x-5)(1+2x+5)
= (-6-2x)(6+2x)
H= -x²+2x-1
= ( -x - 1)²
E= (2x-3)²+(2x-3)(x+1)
= (2x-3)(2x-3+x+1)
= (2x-3)(3x-2)
bonne chance :)