$$ \begin{aligned} (x-7)(x-5) &= 0&& \text{simplify left side} \\[1 em]x^2-5x-7x+35 &= 0&& \\[1 em]x^2-12x+35 &= 0&& \\[1 em] \end{aligned} $$
$ x^{2}-12x+35 = 0 $ is a quadratic equation.
You can use step-by-step quadratic equation solver to see a detailed explanation on how to solve this equation.
This page was created using
Polynomial Equations Solver