Question

zapisz w jak najprostszej postaci: a)-4(2x+0,5) b)3(x^2-2)-(5-6x^2) c) -3(1-2y)+1/2(6-12y) d) -(x-2)-4(1/2-x)

Answer 1

 a)-4(2x+0,5)=-8x-2

b)3(x^2-2)-(5-6x^2)=3x^2-6-5+6x^2=9x^2-11

c) -3(1-2y)+1/2(6-12y)=-3+6y+3-6y=0

d) -(x-2)-4(1/2-x)=-x+2-2+4x=5x