2d2-5d-3=0

Simple and best practice solution for 2d2-5d-3=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 2d2-5d-3=0 equation: 



2d^2-5d-3=0

a = 2; b = -5; c = -3;
Δ = b2-4ac
Δ = -52-4·2·(-3)
Δ = 49
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{49}=7$


$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-5)-7}{2*2}=\frac{-2}{4}
=-1/2
$


$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+7}{2*2}=\frac{12}{4}
=3
$

See similar equations:

| -4w+30=w | | 3+2x=13-3× | | n6=21 | | 54+8=x | | 36x+12x+9x=142 | | 3=3(p-7) | | 12.50-0.40x=14.75-0.25 | | 6a-5=-7a+6 | | 9j−5j=12 | | 12x6=48 | | .75p=0.4+100 | | −2(3x−4)=−16 | | 2x+3=3(x+4)+8 | | 8b-4=-44 | | 1/3(9-6x)=5-2x | | 2(k-2)=10 | | 1/9y-2=-9 | | −3(p−12)=18 | | -4(5n+10)+20=-2n+16 | | -2=w+6 | | 12x+8=6x-4 | | 2(x-4)=4x-2x+1 | | 3(-7-2x)=3 | | 6+3/5a=2/5a+9 | | P=50-0.50x | | 8b-4=44 | | 2b/11=b-3/4 | | 3x–2=2x+4. | | -4=-6+z | | 5w-12=0 | | 4x+20=13-61 | | 2n+n=15.75 |

Equations solver categories