# How do you factor 5x^4-500x²?

$5 {x}^{4} - 500 {x}^{2} = 5 {x}^{2} \left({x}^{2} - {10}^{2}\right) = 5 {x}^{2} \left(x - 10\right) \left(x + 10\right)$
${a}^{2} - {b}^{2} = \left(a - b\right) \left(a + b\right)$