Développer et réduire si possible (c'est très urgent. Merci d'avance):
a) 8(2-x)-2(-2x+1)-4(x-3)
b) -1(-x-4)+3(-2x-1)-4(-x-3)
c) 2(x+3)-2(-x-3)-5(-3x+2)
a) 8(2-x)-2(-2x+1)-4(x-3)
b) -1(-x-4)+3(-2x-1)-4(-x-3)
c) 2(x+3)-2(-x-3)-5(-3x+2)
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Verified answer
b) -1(-x-4)+3(-2x-1)-4(-x-3)=x+4-6x-3+4x+12=-x+13
c) 2(x+3)-2(-x-3)-5(-3x+2)=2x+6+2x+6+15x-10=19x+2