3b^2-3b-18=0

Simple and best practice solution for 3b^2-3b-18=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 3b^2-3b-18=0 equation:



3b^2-3b-18=0
a = 3; b = -3; c = -18;
Δ = b2-4ac
Δ = -32-4·3·(-18)
Δ = 225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{225}=15$
$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-3)-15}{2*3}=\frac{-12}{6} =-2 $
$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3)+15}{2*3}=\frac{18}{6} =3 $

See similar equations:

| x^2+50x-462=0 | | 25+0.25p=55 | | 10-7x=-2x-2(3x-1) | | X^=25x | | 5m²+20m+20=0 | | 10x−83−4x=6x10x−83−4x=6x | | -1/3y+1/11=13/33 | | 4=t/9 | | X+1.5x+1.5x+2x=x+2x | | -n+4+21n=9 | | -8/5=-1/3v-5/2 | | 184=-5(4+6n)-4n | | 8x=-2x | | 89=11^x | | r^2-r+2=4 | | 8n−15=41 | | 4=2m-5×-2 | | 1/5x-6=3 | | 2(12-8x)=×=-11x | | 4(x-1)/2=2(x+7)/9 | | 9=2x-x+1 | | 38=6x+13 | | (12-6p)+p=-43 | | 1/3x+1=5/6x-5 | | 3/2b+b+(b+45)+(2b+90)+90=540 | | 3x-4=4x+8-x | | 25+50c=5+10c | | x^2-36=38 | | 4X+6Y=24y= | | 25+50c=5 | | -8-x=x=4x | | -77+121=x |

Equations solver categories