Aider moi svp!! Developper&reduire: E) (x+1)²+7x(2-x)= G) (4t+1)(4t-1)-(3t+2)²= I) (3x+4)²-(1-2x)(6+x)
Mathématiques
vambrelea1
Question
Aider moi svp!!
Developper&reduire:
E) (x+1)²+7x(2-x)=
G) (4t+1)(4t-1)-(3t+2)²=
I) (3x+4)²-(1-2x)(6+x)
Developper&reduire:
E) (x+1)²+7x(2-x)=
G) (4t+1)(4t-1)-(3t+2)²=
I) (3x+4)²-(1-2x)(6+x)
1 Réponse
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1. Réponse loulakar
E=(x^2+2x+1)+14x-7x^2
E=(-6x^2)+16x+1
(4t+1)(4t-1) identité remarquable (a-b)(a+b)=a^2-b^2
G=(4t)^2-1-(9t^2+12t+4)
G=16t^2-1-9t^2-12t-4
G=7t^2-12t-5
I=9x^2+24x+16-(6+x-12x-2x^2)
I=9x^2+24x+16-6+11x+2x^2
I=11x^2+35x+10