Question

a^3 + b^3 = (a + b)(a^2 - ab + b^2)

Use the identity for the sum of two cubes to factor 8q^6r^3 + 27s^6t^3.

What is a?
What is b?

Answer 1

Let's look at the first term, this big mess.
Maybe we can figure out what our a value is.

Answer 2

\[\large\rm 8q^6r^3\]

Answer 3

Here is a handy exponent rule that will help us deal with q.