Simplify the expression. write your answer as a complex number.

5 times the square root of 9 minus the square root of negative 64

8 + 8i
8 − 8i
15 + 8i
15 − 8i

Step-by-step explanation:

we know that

The algebraic expression is equal to

Remember that

and

so

substitute

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

a

step-by-step explanation: