Question

Factorise the following expression :​

Answer 1

The answer is "
`(p-1) (pq-r^2)`"

Explanation:

Given:

`\to P ^2q-pr^2-pq+r^2\\\\`

Rearrange the above value:

`\to P ^2q-pr^2-pq+r^2 = p^2q-pq-pr^2+r^2\\\\`

`= pq(p-1)-r^2(p-1)\\\\= (p-1)(pq-r^2)\\\\`