Question

x^2+4x+13 complete the square and solve

Answer 1

Ok, first, is there any number that adds to the middle and multiplies to get the 3rd number?

Answer 2

IF not, move on to complex trinomials.

Answer 3

If that doesn't work out, continue on to use the quadratic formula.

Answer 4

If you need it, here is the formatted quadratic formula: http://www.purplemath.com/modules/quadform.htm