Question 264666
{{{6sqrt(20) + 8sqrt(5) - 5sqrt(45)}}}
{{{sqrt(20) = sqrt(4)*sqrt(5)}}}
{{{sqrt(45) = sqrt(9)*sqrt(5)}}}
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{{{6sqrt(20) + 8sqrt(5) - 5sqrt(45)}}}
= {{{12sqrt(5) + 8sqrt(5) - 15sqrt(5)}}}
= {{{5sqrt(5)}}}