Question

Express $343\times 243$ in exponential form:

• A. $x^{m-n}$
• B. $\sqrt[n]{n{x}^m}$
• C. $\sqrt[m]{m{x}^n}$
• D. $m.x^{1/n}$

Answer 1

The correct option is B $\sqrt[n]{n{x}^m}$

$343=7\times 7\times 7=7^3$
$243=3\times 3\times 3\times 3\times 3=3^5$

=$7^3\times 3^5$