Question 1089670
{{{4sqrt(81x^4y^16z^28)}}}
Assume they mean the 4th root of this expression
{{{4sqrt(3^4x^4y^4^4z^4^7)}}}
extract the 4th root of each
{{{3*x*y^4*z^7}}}
:
;
Check your answer by raising it back to the 4th power
{{{(3*x*y^4*z^7)^4}}} = {{{81*x^4*y^16*z^28}}}