## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$3\sqrt[4]{t}$
By combining like radicals, the given expression, $4\sqrt[4]{t}-\sqrt[4]{t} ,$ simplifies to \begin{array}{l}\require{cancel} (4-1)\sqrt[4]{t} \\\\= 3\sqrt[4]{t} .\end{array} * Note that it is assumed that all variables represent positive numbers.