Question 1019957
Simplify {{{4*sqrt(32x^5yz^7)}}}
Factor inside the radical to reveal some perfect squares
{{{4*sqrt(16*2*x^4*x*y*z^6*z)}}} 
extract the square root of those squares
{{{4*x^2*z^3*4*sqrt(2xyz)}}} = {{{16*x^2*z^3*sqrt(2xyz)}}}