Factorise
p²-2pq+q²-r²
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Answer: (p-q+r) ( p-q+r)
Step-by-step explanation:
(p^2 - 2pq +q^2)-r^2
=> (p-q) ^2 - r^2
it is in the form of (a)^2 - (b)^2
which is (a+b) (a-b)
=> (p-q+r) (p-q-r)
Hope it help you
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