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Answer :

Answer:

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

Answer:

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

Step-by-step explanation: