Développer et réduire les expressions suivantes A=5(2x-1)+7(3x-2) B=3(4n+7)-5(2n-3) C=(6x-5)-(x+4)*3 D=x(5x+3)+4(2x-3) E=8(3y-1)-(7y-6)*2y

Réponse :

Explications étape par étape

Bsr,

A=5(2x-1)+7(3x-2) = 10x -5 +21x -14 = 31x -19

B=3(4n+7)-5(2n-3) = 12n +21 -10n +15= 2n +36

C=(6x-5)-(x+4)*3 = 6x-5  -3x -12 = 3x -17

D=x(5x+3)+4(2x-3)= 5x² +3x +8x -12 = 5x² +11x -12

E=8(3y-1)-(7y-6)*2y = 24y -8 -14y² +12y = -14y² +36y -8

☺

Réponse :

Bonsoir

Explications étape par étape

A = 5(2x -1) +7 (3x-2)

A = 10x -5 +21x -14

A = 31x -19

B = 3(4n +7) -5 (2n -3)

B = 12n +21 -10n +15

B = 2n +36

C = (6x -5) - (x +3) X 3

C = 6x -5 -x X 3 -3 X 3

C = 6x -5 -3x -9

C = 3x -14

D = x(5x +3) +4 (2x -3)

D = 5x² +3x +8x -12

D = 5x² +11x -12

E = 8 (3y -1) - (7y -6) X 2y

E = 24y -8 -7y X 2y +6 X 2y

E = 24y -8 -14y² +12y

E = +36y -8 -14y²