Question 108368
{{{(X+5)^2=144}}}
{{{sqrt((X+5)^2)=sqrt(144)}}}Take the square root of both sides.
{{{X+5=12}}} and {{{X+5=-12}}} Remember positive and negative root.
{{{X+5=12}}}
{{{highlight(X=7)}}}
{{{X+5=-12}}}
{{{highlight(X=-17)}}}  
Check your answers. 
{{{(X+5)^2=144}}}
{{{(7+5)^2=144}}}
{{{(12)^2=144}}}
{{{144=144}}}
{{{(X+5)^2=144}}}
{{{(-17+5)^2=144}}}
{{{(-12)^2=144}}}
{{{144=144}}}
True statements. Good answers.