Question

решите уравнение:а)(2х-3)^2-2х(4+2х)=11

Answer 1

$(2x-3)^{2}-2x(4+2x)=11 \ (2x)^{2}-2*2x*3+3^{2}-8x-4x^{2}=11 \ 4 x^{2} -12x+9-8x-4 x^{2} -11=0 \ -20x-2=0 \ 20x=-2 \ x=-0.1$

Answer 2

спс