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Sagot :

Réponse :

Explications étape par étape

[tex]A=3x+5-8+2x=3x+2x+5-8=5x-3\\B=4(2x-3)=4*2x -4*3=8x-12\\C=4*x*(x-1)=4*(x^{2} -x)=4x^{2} -4x\\D=(x*5-3)*x*2=(5x-3)*2x=10x^{2} -6x\\E=3*(a+7)=3a+21\\F=3,5*x +x =(3,5 +1)*x =4,5x\\G=2x^{2} +3x+4-5x+6x^{2} -1= 8x^{2} -2x+3\\H= (3*2+x)*3x=(6+x)*3x=18x+3x^{2} \\I=2x*3*x*4=2x*x*3*4=2x^{2} *12=24x^{2}[/tex]

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