Question

Factorise 5a² - 125b²

Answer 1

Given:

$5a^2-125b^2$

Find factorise:

Sol:.

$(x-y)(x+y)=x^2-y^2$

For:

$\begin{gathered} =5a^2-125b^2 \\ =(\sqrt[]{5}a-\sqrt[]{125}b)(\sqrt[]{5}a+\sqrt[]{125}b) \end{gathered}$