Question

I. DONT. UNDERSTAND. THIS!! ='(Solve: x^2 - 20x + 36 = 0
{6, -6}
{2, 18}
{-4, -9}
no solution

Answer 1

Hello. You can factor the equation as \((x - 2)(x - 18) = 0\) or you can use quadratic formula:
\[ x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}. \]