Question 558893
<pre>
5x² - 6 = 0

Add 6 to both sides

    5x² = 6

Divide both sides by 5

     x² = {{{6/5}}}

      x = {{{"" +- sqrt(6/5)}}}

Rationalize the denominator by multiplying inside the
radical by {{{5/5}}} to make the denominator become a square:

      x = {{{"" +- sqrt(expr(6/5)*expr(5/5))}}}

      x = {{{"" +- sqrt(30/25)}}}

      x = {{{"" +- sqrt(30)/5}}}

Edwin</pre>