Question

How do you simplify `1/ x^-4`?

Answer 1

One law of exponent states that `a^-n=1/a^n`.

In this case, `1/x^-4=(x^-4)^-1`

But another law of exponent states that `(a^n)^m=a^(n*m)`

Thus,

`(x^-4)^-1=x^((-4)(-1))=x^4`

Finally, `1/x^-4=x^4`