Question

Factor the common factor out of the expression.

4a^4 – 20a^2​

Answer 1

4a²(a² - 5)​

Explanation:

4a⁴ – 20a² =

4a²× a² - 4a²×5 = ⇒ common factor is 4a²

4a²(a² - 5)​ ⇒ factorized