<PRE><B>Question 712873</B>
{{{sqrt(40) = sqrt(4*10)}}}


{{{sqrt(40) = sqrt(4)*sqrt(10)}}}


{{{sqrt(40) = sqrt(2^2)*sqrt(10)}}}


{{{sqrt(40) = 2*sqrt(10)}}}


Answer: {{{sqrt(40) = 2*sqrt(10)}}}</PRE>