Question

Simplify: P-?xq?
9
p-3 x 42 xr-
2​

Answer 1

Answer:

(2p+3q+4r)(9p−r)+(p+q+r)

=18p

2

+27pq+36pr−2pr−3qr−4r

2

+p+q+r

=18p

2

+27pq+34pr−3qr−4r

2

+p+q+r