# How to factor and simplify the expression 4tan^2x-4tan^2xsin^2x using fundamental identities?

##### 1 Answer

Oct 29, 2017

#### Explanation:

Hmmm. well, you can factor out

...since

So you can rewrite the expression as:

...then, you can rewrite

...and the 2

...which I think may be the best you can do.

GOOD LUCK