-2x^2+15x+4=0

Simple and best practice solution for -2x^2+15x+4=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -2x^2+15x+4=0 equation: 



-2x^2+15x+4=0

a = -2; b = 15; c = +4;
Δ = b2-4ac
Δ = 152-4·(-2)·4
Δ = 257
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(15)-\sqrt{257}}{2*-2}=\frac{-15-\sqrt{257}}{-4}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+\sqrt{257}}{2*-2}=\frac{-15+\sqrt{257}}{-4}
$

See similar equations:

| 0.01x0.01=x | | -c-2+43=50 | | -11*x-7=15 | | 8b+8-4b-3b=-2 | | 10x-20=15x-5 | | x20=6x | | 4^5=32^x | | (4y-9)^2-9=7 | | 1372=16t^2 | | (x+4)*x=28 | | 5=2(y-1) | | (7-2y)/2-2(2-y)/5=1.25 | | 1.2(3b-1)=2.1-1.8b | | 1.25t^2+8t-40=0 | | 5^4x-25x^2-180=0 | | 8t^-2+2t+3=0 | | Y=0.2x+500 | | 5a+3=11+3a | | -35x-40+5x^2=0 | | (180(n-2))/179=179*n | | 8^-1x=0 | | 25000=(x-(x*10/100)) | | 4^2y=8 | | b-3b=2b | | 15+10r-9=7r-11 | | 15+10r-9=7r=11 | | A-2=-a | | 2x+10+2x+x-13=0 | | x2+24=10x | | 3x-2/7+5x-8=11/4 | | Y+3=-2x+8 | | 5^x+3.5^(x-2)=140 |

Equations solver categories