# How do you multiply #(3u^2 - n)^2#?

##### 1 Answer

To expand

Fist

Outer

Inner

Last

In essence, you just want to multiply all combinations of the two brackets.

Since

Now you use the FOIL method to expand. "First" means you multiply the first term of the first bracket by the first term in the second bracket

"Outer" means you multiply the first term in the first bracket by the last term in the second bracket- they are the outermost terms

"Inner" means you multiply the second term of the first bracket with the first term in the second bracket

"Last" means you mutiply the last terms of each bracket

Now you combine everything: