Question

simplify ( p - q ) ( p square - 3 pq + 5 q square ) p = -3, q = -1​

Answer 1

Answer:

( p - q ) ( p² - 3pq + 5q²)

Putting the value of p and q

[ -3 - (-1) ] [ (-3)² - 3(-3)(-1) + 5(-1)² ]

( -3 +1) ( 9 - 9 + 5)

Using distributive property

-3( 9 -9 + 5 ) + 1 ( 9 - 9 + 5)

- 27 + 27 - 15 + 9 - 9 + 5

-15 + 5

- 10

Hence - 10 is the answer