Question 265886
Square rote of 2 x square rote of 15 =
{{{(sqrt(2))(sqrt(15))=x}}}
{{{(sqrt(2))^2(sqrt(15))^2=x^2}}}
{{{2(15)=x^2}}}
{{{sqrt(30)=sqrt(x^2)}}}
{{{sqrt(30)=x}}}
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an easier example of this problem below will help you understand the method of solving this problem:
{{{(sqrt(4))(sqrt(9))=x}}}
{{{(sqrt(4))^2(sqrt(9))^2=x^2}}}
{{{4(9)=x^2}}}
{{{sqrt(36)=sqrt(x^2)}}}
{{{6=x}}}

Checking: since we know {{{sqrt(4)=2}}}and{{{sqrt(9)=3}}}, then {{{2*3=x}}}, {{{6=x}}}
so this method of solving is correct