2b2-3b-7=0

Simple and best practice solution for 2b2-3b-7=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 2b2-3b-7=0 equation: 



2b^2-3b-7=0

a = 2; b = -3; c = -7;
Δ = b2-4ac
Δ = -32-4·2·(-7)
Δ = 65
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-3)-\sqrt{65}}{2*2}=\frac{3-\sqrt{65}}{4}
$


$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3)+\sqrt{65}}{2*2}=\frac{3+\sqrt{65}}{4}
$

See similar equations:

| 5x^{2}+10x+20=0 | | p2-20p+10=-9 | | 9x-24=78 | | 10x0-9=9x0+10 | | 4x+44=4x | | X3+3x2=24x+72 | | 2a-16=30 | | j/4+ 7=10 | | j4+ 7=10 | | x(1/2x+6)=432 | | c3− 2=6 | | 4x+-44=4x | | c/3− 2=6 | | g/3+ 16=18 | | (10x-30)(5x-25)=0 | | d/4− 3=2 | | z/3+ 7=10 | | z3+ 7=10 | | 70x60=x | | 3+2j=15 | | .1.3z+1.5=5.4 | | -3x-6x+1-12+5=0 | | -3x-6x-112+15=0 | | t2+ 7=10 | | 5j+2/3=-16 | | 800m=m | | -3x-6x=-1-12+15 | | -7x8=50+2x8 | | 180=9x+3+11x-21+5x-2 | | -0.8v=5 | | 17–3n=2 | | 6x(-4)=3x(-4)-11 |

Equations solver categories