Question

корень -2х^2+5х+3=2х+1

Answer 1

-2х^2 + 5х + 3 - 2х - 1 = 0,
2х^2 - 3х - 2 = 0,
Д = (-3)^2 - 4*2*(-2) = 9 + 16 = 25,
х1 = (3 + 5) / 2*2 = 8 / 4 = 2,
х2 = (3 - 5) / 2*2 = - 2 / 4 = - 0,5 или - 1/2