4m^12-81n^8?

factor

1 Answer
Nov 1, 2017

(2m69n4)(2m6+9n4)

Explanation:

This is a difference of squares. They factor like this:

a2b2=(a+b)(ab)

4m1281n8
=(2m69n4)(2m6+9n4)

There are no common factors/not a difference of squares anymore,
so, if you only want rational coefficients, you are finished :)