# How do you simplify and write 6y^-4 with positive exponents?

$\frac{6}{y} ^ 4$
Since ${x}^{- y} = \frac{1}{x} ^ y$, we can simplify this expression in this manner.
6 does not have an exponent, so it stays on top. ${y}^{- 4}$, on the other hand, does. We can substitute $\frac{1}{y} ^ 4$ for ${y}^{-} 4$.