Question

Which expression is equivalent to 7^3 • 7^xA. 7^3x B. (7•x)^3C. 49^3xD. 7^3 - xE. 343 • 7^xF. 7^3 + x

Answer 1

Given

$7^3\cdot7^x$

Find

Which expression is equivalent to given expression

Explanation

here we use the exponent rule with same base.

$a^n\cdot a^m=a^{n+m}$

so ,

$\begin{gathered} 7^3\cdot7^x \\ 7^{3+x} \end{gathered}$

or ,

$\begin{gathered} 7^3\cdot7^x \\ (7\times7\times7)\cdot7^x \\ 343\cdot7^x \end{gathered}$

Final Answer

Hence , the correct options are E and F