Question

Subtract 7p(3q + 7p) from 8p(2p -7q)​

Answer 1

Answer:

21pq+49p² from 16p²-64pq

Explanation:

16p²-64pq-21pq+49p²

16p²+49p²-64pq-21pq

65p²-85pq

Answer 2

$\rm{8p\left(2p-7q\right)-7p\left(3q+7p\right)=16p^2-56pq-7p\left(3q+7p\right)}$

$\longrightarrow\rm{8p\left(2p-7q\right)-7p\left(3q+7p\right)=16p^2-56pq-21pq-49p^2}$

$\longrightarrow\rm{8p\left(2p-7q\right)-7p\left(3q+7p\right)=16p^2-49p^2-56pq-21pq=-33p^2-77pq}$