Question

Simplify the following.
(a) (p+q+ r)(p - q+ r) + pq minusqr
(c) (l2- m2)(2l+ m) - m3
(e) 3a1b – a) + 2cl b– a) + 3(a2- c2)​

Answer 1

Answer:

sry don't know what the ans is