Question

Solve. x^2 + x = 20

Answer 1

okay so first you move 20 over the = sign

Answer 2

\[x^2+x=20\]
\[x^2+x-20=0\]
\[x=\frac{-b\pm\sqrt{b^2-4ax}}{2a}\]

Answer 3

so it becomes this: