Question

0,4x(5x-6)+7,2=2x(x+0,6),
сросно

Answer 1

2х²-2,4х+7,2=2х²+1,2х
-3,6х=-7,2
х=2

Answer 2

0,4x(5x-6)+7,2=2x(x+0,6)
2x^2 -2,4x +7,2=2x^2+1,2x
7,2=3,6x
x=2