Question 320927
<pre><font size = 3><b>
{{{sqrt(a+2)}}}{{{"="}}}{{{a+2}}}

Square both sides:

{{{a+2}}}{{{"="}}}{{{(a+2)^2}}}

{{{a+2-(a+2)^2}}}{{{"="}}}{{{0}}}

Put parenthese around {{{a+2}}} and put a {{{1}}} coefficient before it:

{{{1(a+2)-(a+2)^2}}}{{{"="}}}{{{0}}}

Factor {{{(a+2)}}} out on the left side:

{{{(a+2)}}}{{{"["}}}{{{1-(a+2)}}}{{{"]"}}}{{{"="}}}{{{0}}}

{{{(a+2)}}}{{{"["}}}{{{1-a-2}}}{{{"]"}}}{{{"="}}}{{{0}}}

{{{(a+2)(-1-a)}}}{{{"="}}}{{{0}}}

{{{matrix(3,3,

a+2=0,   "|", -1-a=0,
  a=-2,  "|",   -a=1,
   "",  "|",   a=-1)}}}

Edwin</pre>