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If \(m\) and \(n\) are positive integers, then what is \((a^m)^n\) equal to?

Answer and explanation

Correct answer: \(a^{mn}\)

By the power-of-a-power law, the outer exponent \(n\) multiplies the inner exponent \(m\). Thus, \((a^m)^n=a^{mn}\), so option C is correct. Adding exponents, as in option A, applies when multiplying powers with the same base, not when raising one power to another. Exam tip: when a power is raised to another power, multiply the exponents.

Related tags

PolynomialsExponent LawsPower Of A PowerOperations On Real Numbers And The Laws Of ExponentsMathematicsClass 10 Mcq

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