Question

2
+
p2-4
4 p2+q2+r2-4 pq
-
2
qr
+
4
rp
=
A) (2p+q+r)2
B) (2p-q+r)2
C) (p-2q+r)2
D) (p+2q-r)2​

Answer 1

Answer:

2+p2-44p2+q2+r2-4pq-2qr+4rp==(p+2q-r)2