Sagot :
Bonsoir,
8-4(x-3) = 8-4x+12 = 20-4x
2(3-4x)+4(1-2x) = 6-8x+4-8x = 10-16x
-2(3x+1)-3(x+3) = -6x-2-3x-9 = -9x-11
5(6x-1)-(3+8x) = 30x-5-3-8x = 22x-8
2x(x+4)+x(1-x) = 2x²+8x+x-x² = x²+9x
Réponse :
Explications étape par étape :
Bonsoir
A = 8 - 4 (x - 3)
A = 8 - 4x + 12
A= - 4x + 20
B = 2(3 - 4x) + 4(1 -2x)
B = 6 - 8x + 4 - 8x
B = - 16x + 10
C = - 2( 3x + 1) - 3 ( x + 3)
C = - 6x - 2 - 3x - 9
C = - 9x - 11
D = 5 ( 6x - 1) - (3 + 8x)
D = 30x - 5 - 3 - 8x
D = 22x - 8
E = 2x(x +4) + x (1 - x)
E = 2x² + 8x + x - x²
E = x² + 9x