Question

What is a simpler form of the radical expression?
4 sqrt 81x^20y^8

Answer 1

remember
$\sqrt{xyz}=( \sqrt{x} )( \sqrt{y} )( \sqrt{z})$
4$\sqrt{81x^(20)y^8}$=
4$=( \sqrt{81} )( \sqrt{x^{20}} )( \sqrt{y^8})$=
4$=(9)( x^{10} )( y^{4})$=
36x¹⁶y⁴