a) 6(x-4)-2 b)2(x+1)-3(X-1) c)-3(y-2)+4(y+2) d)5(x-y-1)-4(x+2) e)2(3a+b)-2(a-b) f)jedna druga(4x-4)-2x g)x(x-1)-3(x^2-z) x^2 to znaczy do potęgi 2 h)5a(a-3)-3a(a-5) i)3x(x+Jedna trzecia Y)-2y(jedna druga X - jedna druga)

a) 6(x -4) - 2 = 6x-24-2 = 6x-26 b) 2(x + 1) - 3(x - 1) = 2x+2-3x+3 = -x+5 c) -3(y - 2) + 4(y + 2) = -3y+6+4y+8 = y+14 d) 5(x - y - 1) - 4(x + 2) = 5x-5y-5-4x-8 = x-5y-13 e) 2(3a + b) - 2(a - b) = 6a+2b-2a+2b = 4a+4b f) ½(4x - 4) - 2x = 2x-2-2x = -2 g) x(x - 1) - 3(x² - x) = x²-x-3x²+3x = -2x²+2x h) 5a(a - 3) - 3a(a - 5) = 5a²-15a-3a²+15a = 2a² i) 3x (x + ⅓ y) - 2y (½ x - ½) = 3x²+xy-xy+y = 3x²+y