Question

x(2x-1)-3x(3-x), если х=-2

Answer 1

2х^2-х-9x+3х^2=5х^2-10x
Если х=-2, то 5*(-2)^2-10*(-2)=20+20=40

Answer 2

= 2х²-х-9х+3х² = 5х²-10х = 5*(-2)²-10*(-2) = 20+20 = 40