Question

Помогите решить
х^2+4х=5

Answer 1

$x=frac{-4+6}{2}=1; x=frac{-4-6}{2}=-5$ $x^{2}+4*x=5; x^{2}+4*x-5=0; D= b^{2}-4ac; D=16+20=36$

Answer 2

$x^{2}+4*x=5; x^{2}+4*x-5=0; D= b^{2}-4ac; D=16+20=36$

Answer 3

x=(-4+6)/2=1; x=(-4-6)/2=-5