pourriez vous m'aider svp
on considère la fonction f définie parf(x)=(2x-3) au carré -(6x-9)
1. factoriser f(x)
2.developper f(x)
merci de m'aider svp
Bonjour,
1)
2)
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Bonjour,
1)![f(x)= (2x-3)^2-(6x-9)\\ =(2x-3)\left[(2x-3)-3\right]\\ =(2x-3)(2x-6) = 2(2x-3)(x-3) f(x)= (2x-3)^2-(6x-9)\\ =(2x-3)\left[(2x-3)-3\right]\\ =(2x-3)(2x-6) = 2(2x-3)(x-3)](https://tex.z-dn.net/?f=f%28x%29%3D+%282x-3%29%5E2-%286x-9%29%5C%5C+%3D%282x-3%29%5Cleft%5B%282x-3%29-3%5Cright%5D%5C%5C+%3D%282x-3%29%282x-6%29+%3D+2%282x-3%29%28x-3%29)
2)