Question

Решите уравнения плз 5x^2=2x+2

Answer 1

$5x^2=2x+2 \ 5x^2-2x-2=0 \ D=(-2)^2+4*5*(-2)= sqrt{44 } =2 sqrt{11} \ \ x1= frac{2+2 sqrt{11} }{10} = frac{1+ sqrt{11} }{5} \ \ x2=frac{2-2 sqrt{11} }{10} = frac{1- sqrt{11} }{5}$