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}`