## anonymous 3 years ago My answer is C Solve. 2x2 + x = 15. (1 points) Answer x = 5/2 and x = -3 x = 2 and x = -15 x = -2 and x = 5/3 x = 17 and x = 13

1. anonymous

2x2 + x = 15 2x2 + x -15 =0 (2x-5)(x+3)=0 x= 5/2 OR x=-3

2. anonymous

You can also use formula, which is much easier if you ask me $\frac{ -b \pm \sqrt{b ^{2}-4*a*c} }{ 2*a }$ a=2, b=1, c=-15

3. anonymous

aww you're so kind, thank you

4. anonymous

x1 = 2.5 x2 = -3 As @julliemyers said :) Good luck!

5. anonymous

thanks!