# How do you factor #15r^2-16rt+4t^2#?

##### 1 Answer

Mar 28, 2016

#### Explanation:

We need to know the factors of 15 and 4 that will provide a sum of 16

factors of 15=3 and 5

factors of 4 = 2 an 2

By inspection , we have the numbers 2, 2, 3 , 5

We can now use the combination of 2(3) + 2(5)=6+10=16 which is the number at the middle term.

To use these numbers in factoring the arrangement should be

God bless....I hope the explanation is useful.