Question

Subtract the sum of (p sq. - 5q sq. + 2r sq. + 3pqr)sq. And (-3p sq. -7p sq. +r sq. -pqr) from the sum of (3p sa. -q sq.+7r sq + 5pqr) and (-psw.-q sw. -2r sq. -3pqr)

Answer 1

so your answer is here. firstly we will do summation of the