2x^{2} + 4x = 16 Move 16 to the left to help solve the problem
2x^{2} + 4x  16 = 0 Now factor out 2 from the equation
2(x^{2} + 2x  8) = 0 Now look at the factors of 4 that subtract to get a +2
2(x + 4)(x  2) = 0 Now set the parts equal to 0 and solve
2 = 0
not a solution
x + 4 = 0
 4 4
x = 4
x  2 = 0
+2 +2
x = 2
The solutions are (4, 2)
10/28/2013

Dawn Z.