Question

if x = 3/7-³ then x-² equals​

Answer 1

$x = ( \frac{3}{7} )^{ - 3}$

we know that if

${x}^{ - y} =( \frac{1}{x} )^{y}$

Therefore,

$x =( \frac{7}{3} )^{3}$

$x = \frac{7 \times 7 \times 7}{3 \times 3 \times 3 } = \frac{343}{21}$

hope it helps you!