Question

Factorise the following expressions:
(a) p ^2 – 21p + 110
(b) 54m^3 n + 81m^4 n^ 2​

Answer 1

Answer:

Consider the given expression.

⇒4n

2

−8n+3

⇒4n

2

−6n−2n+3

⇒2n(n−3)−1(n−3)

⇒(n−3)(2n−1)

When,

n−3=0

n=3

When,

2n−1=0

n=

2

1