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Evava83
@Evava83
May 2019
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Bonjour, niveau 2nde pouvez vous m'aider svp
merci
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Kathir93
Verified answer
Bonsoir,
(x+6)(7x-9)+3x(x+6)
=(x+6)[(7x-9)+3x]
=(x+6)(10x-9)
x²-9
=x²-3²
=(x-3)(x+3)
16-x²
=4²-x²
=(4-x)(4+x)
(x+2)²-36
=(x+2)²-6²
=(x+2-6)(x+2+6)
=(x-4)(x+8)
J'espère t'avoir aidé
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Verified answer
Bonsoir,(x+6)(7x-9)+3x(x+6)
=(x+6)[(7x-9)+3x]
=(x+6)(10x-9)
x²-9
=x²-3²
=(x-3)(x+3)
16-x²
=4²-x²
=(4-x)(4+x)
(x+2)²-36
=(x+2)²-6²
=(x+2-6)(x+2+6)
=(x-4)(x+8)
J'espère t'avoir aidé