2x2-3x-2=0

Simple and best practice solution for 2x2-3x-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 2x2-3x-2=0 equation: 



2x^2-3x-2=0

a = 2; b = -3; c = -2;
Δ = b2-4ac
Δ = -32-4·2·(-2)
Δ = 25
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{25}=5$


$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-3)-5}{2*2}=\frac{-2}{4}
=-1/2
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3)+5}{2*2}=\frac{8}{4}
=2
$

See similar equations:

| 9+10n=9n+11 | | 3(v+2)+1v=2(v-1)+5 | | 1-2x+4x=5x-2-5x+5 | | 7n-1-6n=6 | | -6.5-5.5(1+9.5r)=18.5 | | -4(3w-5)+3w=7(w+4) | | 3^x=18^3 | | 1-2x+4x=5 | | -1+4r=23 | | 4m+2(3m+14)=8-(4+2m) | | 7-0.75c=2.80 | | 42=7(x+10) | | -6(x+4)=-3(x+8) | | 6-6(3x-6)=-6 | | w/5-3.2=-15.7 | | 8x+5=8x-16 | | (x7/5/9)=169/x3/5 | | 1/5x-30=x-6 | | x/0.34=73.3 | | 2/(x+2)(x-2)=(18/5x) | | x*0.34=73.3 | | -18=6(x-100 | | 1/3=(t-7)=-7 | | 7c+0.75=2.80 | | (2/(x+2)(x-2))=(18/5x) | | 4x+48/16=87 | | (2/(x+2)(x-2))=(18/5x | | -14=5(2x-4) | | (2/(x+2)(x-2))=(18/(5x)) | | (2a+3)−(4a−8)=7 | | 0.25e−14=26e= | | 3(15x+50)=420 |

Equations solver categories