Question

Solve the following quadratic equation by factorization method.
$x+\frac{20}{x}-12=0$.

Answer 1

$\begin{array}{c}{x}^2+20-12=0\\ x^{-12}x+20=0[\therefore 10\times 2=20]\\ x^2-10x-2x+20=0\\ x(x-10)-2(x-10)=0\\ (x-2)(x-10)=0\\ x=2orx=10\end{array}$