Question

find the value of (7) -3​

Answer 1

Answer:

The value of (7)-3 is -21.

Answer 2

The value $7^{-3}$ is $\frac{1}{343}$

Step-by-step explanation:

$7^{-3}$ can be written as $\frac{1}{7^{3} }$

this is because the power is negative.

now a number raised to power three means that we have to multiply the number three times that is :

$\frac{1}{7}*\frac{1}{7}*\frac{1}{7} = \frac{1}{343}$

it can also be written as

$= 343^{-1}$

hence, $= 343^{-1}$ is the value for $7^{-3}$