Question

Doprowadź do najprostszej postaci:
a) -2x*y*(-3xy)*(-x)*2x

b) 3(a-2)-(a^{2}-5a) + 3

c) (y-3) -2 (2y + 4)

Answer 1

a)  -2x*y*(-3xy)*(-x)*2x=6x^2y^2*(-2x^2)=-12x^4y^2

b) 3(a-2)-(a^{2}-5a) + 3=3a-6-a^2+5a+3=-a^2+8a-3

c) (y-3) -2 (2y + 4)=y-3-4y-8=-3y-11

Answer 2