Question 570659
<pre>
(2x+6)²

To square something, you multiply it by itself, 
so write it down twice:

(2x+6)(2x+6)

and multiply using FOIL:

(2x)(2x) + (2x)(6) + (6)(2x) + (6)(5)

  4x²    +   12x   +    12x  +   36

          4x² + 24x + 36

Edwin</pre>