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Cloclodevoirs
@Cloclodevoirs
May 2022
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bonjour est ce que vous pourriez m'aider a factoriser
B(x)= (2x-3)²-(1-5x)²
et
A(x)= x²-4x+4-(7x-3)(3x-6) merci 20pts
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LaurentCr
Réponse :Explications étape par étape :[tex]B(x) = 4x^2 -12x+9 - (1-10x+25x^2)\\= 4x^2 -12x+9 - 1+10x-25x^2\\= 4x^2-25x^2-12x+10x+9-1\\= -21x^2 -2x+8[/tex][tex]A(x)= x²-4x+4-(7x-3)(3x-6)\\= x^2 -4x +4 - (21x^2-42-9x+18)\\= x^2 -4x +4 - 21x^2+42-9x-18\\= x^2- 21x^2-4x-9x+4+42-18\\=-20x^2-13x+28[/tex]
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