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Which of the following correctly represents a law of exponents for a non-zero real number \(a\) and integers \(m,n\)?

Answer and explanation

Correct answer: \(a^m\times a^n=a^{m+n}\)

When powers with the same base are multiplied, their exponents are added; hence \(a^m\times a^n=a^{m+n}\) is correct. Option B incorrectly multiplies the exponents. Exponents are multiplied when a power is raised to another power: \((a^m)^n=a^{mn}\), so option D is also incorrect. Exam tip: add exponents for multiplication of like bases, but multiply them for a power of a power.

Related tags

Number SystemsExponentsLaws Of ExponentsAlgebraic PropertiesClass 9 MathematicsMathematicsClass 9 Mcq

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