Question 83 (vii)
Multiply the following:
7pqr, (p - q + r)
We have, 7 pqr and (p - q + r) ∴7pqr×(p−q+r)=7pqr×p−7pqr×q+7 pqr×r=7p2qr−7pq2r+7pqr2
Multiply the following :
−7pq2r3,−13p3q2r