Understanding Expressions with Exponents

What is the main difference between the expressions a^b and (-a)^b?

• The presence of a negative sign in the base.

• The type of numbers used in the expression.

• The use of parentheses around the base.

• The value of the exponent.

How does the parity of the exponent affect the result of (-a)^b?

• Even exponents make the result negative.

• It does not affect the result.

• Odd exponents make the result negative.

• Odd exponents make the result positive.

What is the result of (-2)^4?

• -8

• 16

• -16

• 8

If a negative number is raised to an even power without parentheses, what will the result be?

• Positive

• Undefined

• Negative

• Zero

Which of the following expressions will yield a positive result?

• (-3)^2

• (-3)^3

• -3^3

• -3^2