Question

sove this question . Factorisation .With steps

Answer 1

p²-4pq+4q²-r²
(p²-4pq+4q²)-r²
(p-2q)²-r²

Now using identity
a²-b²=(a+b)(a-b)

{(p-2q)+r}{(p-2q)-r)
(p-2q+r)(p-2q-r)Ans.