Question 1028395
{{{18x^2=162}}}

If you don't 'see' that both 18 and 162 are multiples of 9, or that 162 is a multiple of 18, you might see that they are both even. So both can divide by 2.

{{{9x^2=81}}}

Now, the numbers should be easier. As we know 9*9 is 81, so divide both side by 9.

{{{x^2=9}}}


{{{x=3}}} or {{{x=-3}}}