Question

(-64)^(1/2) evaluated?

Answer 1

8i

Explanation:

When a quantity is raised to a fractional power, you need to root it to the power of the denominator.

For example, (-64)^(1/2) = √(-64)

Since you are taking the root of a negative, you will need to put an i (imaginary) in your answer.

Answer 2

8

Explanation:

Simplify the expression.

Rewrite 64 as 8^2

Apply the power rule and multiply exponents, (am^)n = a^mn

8^2(1/2)

Cancel the common factor of 2

Rewrite the expression.

8^1

Evaluate the exponent.

8

Hope that helps!