Question 1118033
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(1) Rewrite the given equation as {{{1/a = sqrt(5)-2}}}, and rewrite the equation to be shown as {{{a-1/a = 4}}}<br>
(2) Solve the given equation to find a.<br>
{{{1/a = sqrt(5)-2}}}
{{{a = 1/(sqrt(5)-2) = (sqrt(5)+2)/(5-4) = sqrt(5)+2}}}<br>
(3) {{{a-1/a = (sqrt(5)+2)-(sqrt(5)-2) = 4}}}