Use the Binomial Theorem to expand the complex number. Simplify your result. I am really struggling on finding the solution.

Question

(5 + √ -9)³

Answer 1

I will write the expansion for you, but you will need to simplify the terms and collect them.

5³+ 3*5²*sqrt(-9)+3*5(-9)+[sqrt(-9)]³

Note: the 2 3's are the binomial coefficients.