Question

Factorise the following :​

Answer 1

p²q-pr²-pq+r²

p²q-pq-pr²+r²

taking common from two term

pq(p-1)-r²(p-1)

again taking common

(p-1)(pq-r²)

is your answer

Explanation:

Answer 2

p²q-pr²-pq+r²

p²q-pq-pr²+r²

taking common from two term

pq(p-1)-r²(p-1)

again taking common

(p-1)(pq-r²)

is your answer