Question

simplify :(p+q-2r)(2p-q+r)-4qr​

Answer 1

p(2p-q+r)+q(2p-q+r)-2r(2p-q+r)-4qr

2p²-2pq+pr+2pq+qr-4pr+2qr-2r²-4qr

2p²+pr-4pr+qr+2qr-4qr-2r²

2p²-3pr+3qr-4qr-2r²

2p²-3pr-qr-2r²

2p²-2r²-3pr-qr

2(p²-r²)-r(3p+q)

Answer 2

Answer:

Answer

Step-by-step explanation:

hope this may help you.