Question

How do you factor `49p³q - 36pq³`?

Answer 1

`pq(7p+6q)(7p-6q)`

Explanation:

`49p^3q-36pq^3 =pq(49p^2-36q^2)`

`=pq((7p)^2-(6q)^2)`

`=pq(7p+6q)(7p-6q) ;[a^2-b^2= (a+b)(a-b)]`

`=pq(7p+6q)(7p-6q)` [Ans]