Question 2(iv)
Express the following in exponential form:
(iv) $5 \times 5 \times 7 \times 7 \times 7$

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Solution

Number written in the form of base and exponent is called the exponential form.

(iv) $5 \times 5 \times 7 \times 7 \times 7$

In the given form, 5 occurs twice and 7 occurs thrice.

$∴$ The exponential form is $5^{2} \times 7^{3}$

Here 5, 7 are bases and 2, 3 are exponents.

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\frac{3 \times 7^{2} \times 11^{8}}{21 \times 11^{3}}

Question 81 (c)

Express each of the following in single exponential form.
$5^{2} \times 7^{2}$

5 \times 5 \times 7 \times 7 \times 7

Question 84 (a)

Simplify and express each fo the following in exponential form.
$[{(\frac{3}{7})}^{4} \times {(\frac{3}{7})}^{5}] \div {(\frac{3}{7})}^{7}$

[(5^{2})^{3} \times 5^{4}] \div 5^{7}

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