SOLUTION: 4x^2+11x=2x^2-15 2x62+11x+15=0 (2x+5)(x+3)=0 2x=5 x=5/2 x=3 My teacher says I have sign errors, can you please help? Thanks

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 4x^2+11x=2x^2-15 2x62+11x+15=0 (2x+5)(x+3)=0 2x=5 x=5/2 x=3 My teacher says I have sign errors, can you please help? Thanks      Log On


   

Question 181889This question is from textbook
: 4x^2+11x=2x^2-15
2x62+11x+15=0
(2x+5)(x+3)=0
2x=5
x=5/2
x=3
My teacher says I have sign errors, can you please help? Thanks This question is from textbook

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
4x^2+11x=2x^2-15
2x^2+11x+15=0
(2x+5)(x+3)=0
2x=5 <<--should be 2x=-5
x=5/2 <<--should be x=-5/2
x=3 <<--should be x=-3
.
For example, you're setting each term to zero:
(2x+5)=0
subtracting 5 from each side:
2x = -5
dividing both sides by 2:
x = -5/2