Question

what will be the answer of this :- (p+q-r)^2 ​

Answer 1

Answer:

(p+q-r)^2 ​

Step-by-step explanation:

(p+q+r)^2+(p-q-r)^2

=p^2+q^2+r^2+2pq+2qr+2pr+p^2+q^2+r^2-2pq+2qr-2pr

=2p^2+2q^2+2r^2+4qr