Question

substract
$4 {p}^{2} q - 3pq + 5pq {}^{2} - 8p + 7q - 10 \: from \: 18 - 3p - 11q + 5pq - 2pq {}^{2} + 5p {}^{2} q$
​

Answer 1

Subtracting 4p

2

q−3pq+5pq

2

−8p+7q−10 from 18−3p−11q+5pq−2pq

2

+5p

2

q, we have

= (18−3p−11q+5pq−2pq

2

+5p

2

q)−(4p

2

q−3pq+5pq

2

−8p+7q−10)

= 18−3p−11q+5pq−2pq

2

+5p

2

q−7p

2

q+3pq−5pq

2

+8p−7q+10

= 28+5p−78q+8pq−7pq

2

+p

2

q