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)

^2- to kwadrat

Answer 1

 a) -4(2x+0,5) = -2(4x + 1)b)
3(x^2-2)-(5-6x^2 =
= 3x² - 6 - 5 + 6x² = 9x² - 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 = 3x