Question

simplify the following equation​

Answer 1

Step-by-step explanation:

"(p+q−2r)(2p−q+r)−4qr

= p(2p−q+r)+q(2p−q+r)−2r(2p−q+r)−4qr

= 2p

2

−pq+pr+2pq−q

2

+qr−4pr+2qr−2r

2

−4qr

= 2p

2

−q

2

−2r

2

+pq−3pr−2qr"