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darina1312
@darina1312
June 2021
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Bonjour,j'ai un DM de math basé sur trois exercices Si quelqu'un pourrais m'aider ce serais très gentil merci d'avance,
Consigne: factoriser chaque expressions en utilisant une identité remarquable
exercice n°1
a)x² + 16x + 64 b) 4x² - 20x + 25
exercice 2
a) 16x²-1 b) 4x² - 25
exercice 3
a) 9- x² b) (x+2)² - 49
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slyz007
Verified answer
X²+16x+64=(x+8)²
4x²-20x+25=(2x-5)²
16x²-1=(4x+1)(4x-1)
4x²--25=(2x+5)(2x-5)
9-x²=(3+x)(3-x)
(x+2)²-49=(x+2+7)(x+2-7)=(x+9)(x-5)
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Verified answer
X²+16x+64=(x+8)²4x²-20x+25=(2x-5)²
16x²-1=(4x+1)(4x-1)
4x²--25=(2x+5)(2x-5)
9-x²=(3+x)(3-x)
(x+2)²-49=(x+2+7)(x+2-7)=(x+9)(x-5)