Evaluate the following expression. 70
evaluate the following expression.
70
simplify.
y-3
evaluate the following expression.
5-3

I am assuming the -3 is an exponent.

y⁻³ and 5⁻³

If the exponent is a negative number, it simply means that the number is a denominator with 1 as the numerator.

y⁻³ is 1/y³
5⁻³ is 1/5³ = 1/125

The number is still raised to its exponential power but its placement is different.

5³ would be 125 or 125/1. It would be the numerator with 1 as the denominator.