0,2x*(5x-8)+3,6=x*(x-0,7).ПОМОГИТЕ

Question

0,2x*(5x-8)+3,6=x*(x-0,7).ПОМОГИТЕ

Answer 1

0.2x (5x-8) +3.6 = x (x-0.7)
x^2 - 1.6x +3/6 = x^2 - 0.7x
0.9x = 3.6
x=4