Question 906697
{{{sqrt(5)*(7-sqrt(5))+6*sqrt(5)}}}


{{{sqrt(5)*(7)+sqrt(5)*(-sqrt(5))+6*sqrt(5)}}}


{{{7*sqrt(5)-5+6*sqrt(5)}}}


{{{-5+13*sqrt(5)}}}


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Therefore, {{{sqrt(5)*(7-sqrt(5))+6*sqrt(5)=-5+13*sqrt(5)}}}