SOLUTION: solve the equation by factoring: 2x2+x-15=0

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: solve the equation by factoring: 2x2+x-15=0      Log On


   

Question 313823: solve the equation by factoring:
2x2+x-15=0
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
+2x%5E2%2Bx-15=0+
+2x%5E2%2B6x-5x-15=0+
Group terms:
+%282x%5E2%2B6x%29-%285x%2B15%29=0+
+2x%28x%2B3%29-5%28x%2B3%29=0+
+%28x%2B3%29%282x-5%29=0+
.
x = {-3, 5/2}