Question 464811

remember:

{{{(a + b)^2 = (a + b)(a + b) = a^2 + 2ab + b^2}}}

or

The square of any binomial produces the following three terms:

1.   The square of the first term of the binomial:  {{{a^2}}}

2.   Twice the product of the two terms:  {{{2ab}}}

3.   The square of the second term:  {{{b^2}}}