-125+15x+8x^2=0

Simple and best practice solution for -125+15x+8x^2=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 -125+15x+8x^2=0 equation: 



-125+15x+8x^2=0

a = 8; b = 15; c = -125;
Δ = b2-4ac
Δ = 152-4·8·(-125)
Δ = 4225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4225}=65$


$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(15)-65}{2*8}=\frac{-80}{16}
=-5
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+65}{2*8}=\frac{50}{16}
=3+1/8
$

See similar equations:

| 4y/16.3=53.1 | | 23=y+7 | | y-12+89=89+12 | | q/3+10=9 | | 3*x-11+71=90 | | 180(n-2)/n=178.56 | | p/2+-1=0.36 | | -2x+81+9=7x | | 1,068-x=74 | | 23=v-9 | | X=-8a^2+4a-20 | | x-1,068=74 | | X=-8a^{2}+4a-20 | | 1068-x=74 | | z/5-5=11/18 | | x+86=103 | | 17+x+6=17+x+6 | | -8(5p+6)=272 | | c+11=25 | | x*1.6=0.8 | | x+203.5=400 | | t-34=41 | | 2/5+m=4/6 | | 9(c-6)-8=7c-3 | | –5x+13x−–13x+–10x=–11 | | 3x+17=8x-32=2x | | 1.1=q/3-2.5 | | x-1.875=0.65 | | 3/5w=153/5 | | -2/9c=1/4 | | 10c+20=30 | | x+17.8=20 |

Equations solver categories