5 3 6 38. 6у +7/4+8-5у/3 =5. (2х – 3)² + 7х(3х – 1) = (5х + 2)². 0,2х(5у-2)=0, 3(2у-1) -0, 9. У=1.2х5+4х2-3х3-1.2х+0.007