Can you give me a Matlab code for this please thank you

Equation Roots

Define variable $\backslash ($ y$=$x$^\{4\}-81\backslash ).$ Let variable $\backslash ($ z $\backslash )$ be all of the roots of $\backslash ($ y$=0\backslash ).$ Use the solve function to find $\backslash ($ z $\backslash ).($Hint: It will have four values.$)$

Script $\backslash (\{\}^\{\backslash$circ$\}\backslash )$

Assessment:

check expression

check function

check results