Question 401250
{{{sqrt(20)*sqrt(10) = sqrt(20*10)}}}
{{{sqrt(20*10) = sqrt(200)}}}
{{{sqrt(200) = sqrt(100)*sqrt(2)}}}
{{{sqrt(100)*sqrt(2) = 10*sqrt(2)}}} answer
Note that {{{100}}} is the largest perfect square
that can be factored out o {{{200}}}