Question

Express the following as a rational number with positive exponent : 7^2×7^-3​

Answer 1

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Express the following as a rational number with positive exponent :

${7}^{2} \times {7}^{ - 3}$

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$= {7}^{2} \times {7}^{ - 3} \\ = 49 \times \frac{1}{ {7}^{3} } \\ = \frac{49}{343}$

Hence, shown.

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→What is rational number?

Ans:- Any fraction which is represented in (p/q) form where q is not equal to zero.

→What is positive exponent?

Ans:- A positive exponent tells us how many times to multiply a base number.

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