# How do you factor #36x^4 + 15x^2 + 4#?

##### 1 Answer

First notice that

Suppose it has quadratic factors:

Comparing the coefficients of

Looking at the coefficient of

If

How about the other possibility:

Then

Looking at the coefficient of

So

May 23, 2015

First notice that

Suppose it has quadratic factors:

Comparing the coefficients of

Looking at the coefficient of

If

How about the other possibility:

Then

Looking at the coefficient of

So