# How do you factor completely #5a^2 + b#?

##### 1 Answer

Apr 14, 2016

This expression cannot be simplified further.

#### Explanation:

Unless we are given extra information (e.g.

If the second term was

#5a^2+b^2 = (sqrt(5)a)^2-(bi)^2 = (sqrt(5)a-bi)(sqrt(5)a+bi)#

Alternatively, if we were told that

#5x^2+b = (sqrt(5)a)^2-(sqrt(b)i)^2 = (sqrt(5)a-sqrt(b)i)(sqrt(5)a+sqrt(b)i)#