t^2 +4z^2 How do I factor this expression?

Question

How do I factor this?

Answer 1

That is the answer as is: t² + 4z².  There is nothing you can do.

 

 

Unless the expression is t² - 4z² where the expression is difference of 2 squares can be factored as (t + 2z) (t - 2z).  Other than that, t² + 4z² is the answer.