Question 134009
If you post this problem this way, it iwll be easier to solve
6 * sqrt(20) + 8*sqrt(5) - 5* sqrt(45)

Given: {{{6 * sqrt(20) + 8*sqrt(5) - 5* sqrt(45)}}}
{{{ 6 * sqrt(4*5) + 8*sqrt(5) - 5* sqrt(9*5) }}}
{{{ 6 * 2 * sqrt(5) + 8*sqrt(5) - 5*3*sqrt(5) }}}
{{{ (12 + 8 + 15)* sqrt(5) }}}
{{{ 35 * sqrt(5) }}}