Question

Which expressions are equivalent to 4^-2 times 7^-2

Answer 1

Step-by-step explanation:

$= {4}^{ - 2} \times {7}^{ - 2}$

$= {(4 \times 7)}^{ - 2}$

$= {28}^{ - 2}$

$= \frac{1}{ {28}^{2} }$