Question 53936
| 5x | means {{{sqrt((5x)^2)}}}
{{{sqrt((5x)^2) = 10}}}
{{{sqrt(25x^2) = 10}}}
+-{{{5x = 10}}}
{{{x}}} = {{{10}}}/+-{{{5}}}
{{{x = 10/5}}} and {{{x = 10/-5}}}
{{{x = 2}}} and {{{x = -2}}}