SAT Subject Test Mathematics Level 2

In  all the answer  choices,    a   =   1,  so  you can say more    simply

So  the answer  is  the equation    with    a   =   1,  b   =   −6, and c   =   13: x^2     −    6 x    +   13  =   0.

Another way to  approach    this    problem is  to  generate    the expression  from    the roots.  If  the

solutions   are 3   ±   2i, then    the factored    expression  is  [x  −   (3  +   2i)][x  −   (3  −   2i)].

Multiplying this    out gives

Combining   like    terms   gives   you

x^2     −   6x  +   9   −   4i^2    =   x^2     −   6x  +   13

27 . E
Draw in a right triangle: