If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(1/14)*x^2+(15/14)*x = 0
1/14*x^2+15/14*x = 0
DELTA = (15/14)^2-(0*1/14*4)
DELTA = 225/196
DELTA > 0
x = ((225/196)^(1/2)-15/14)/(1/14*2) or x = (-(225/196)^(1/2)-15/14)/(1/14*2)
x = 0 or x = -15
x in { -15, 0 }
| 22+15=737 | | 6k^2+19k+3=0 | | 45x+3=2+30x | | 1/14*x^2+15/14*x | | 6/-4.5= | | 40=6x-8 | | 3x+45=2x+30 | | 64-16x^2=0 | | 8x-11=-3 | | -16x^2-16x+60=0 | | 7d+3=6d+5 | | 3x+30=45+2x | | 6(x-8)=-35.4 | | 2x=2(x+2) | | 6(x-8)=35.4 | | -2u+9=-11 | | 3x^2+11x-8=0 | | 4w-9=3 | | 6(a+8)=104.4 | | -16x^2+20x-4=0 | | 6(a+8)=-35.4 | | 16x^2-20x-4=0 | | 0.9k+2.3x=-6.4 | | 20.5=9c-2 | | 380/70 | | 3e-8=5.8 | | 70/380 | | 4/6x2-26x-12 | | 7p=6.3 | | 7(x-9)=-42 | | 3x+34=1 | | 5(a+2)=20 |