Bonjour, Pouvez-vous me dire si c’est juste, merci.
Developper, réduire et ordonner
A= (1-3x)∧2-2(x+3)(x-3)
= 1-6x+9x^2-2(x^2-9)
=1-6x+9x^2-2x^2+18
= 1+18-6x+7x^2
Factoriser
B=X^2+4+3(4x+1)(x-2)
= (x+2)(x-2)+3(4x+1)(x-2)
=(x-2) [(x+2)+3(4x+1)]
=(x-2)(x+2+12x+3)
=(x-2)(13x+5)
Developper, réduire et ordonner
A= (1-3x)∧2-2(x+3)(x-3)
= 1-6x+9x^2-2(x^2-9)
=1-6x+9x^2-2x^2+18
= 1+18-6x+7x^2
Factoriser
B=X^2+4+3(4x+1)(x-2)
= (x+2)(x-2)+3(4x+1)(x-2)
=(x-2) [(x+2)+3(4x+1)]
=(x-2)(x+2+12x+3)
=(x-2)(13x+5)
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