8b^2+b-7=0

Simple and best practice solution for 8b^2+b-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 8b^2+b-7=0 equation: 



8b^2+b-7=0

a = 8; b = 1; c = -7;
Δ = b2-4ac
Δ = 12-4·8·(-7)
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{-(1)-15}{2*8}=\frac{-16}{16}
=-1
$


$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+15}{2*8}=\frac{14}{16}
=7/8
$

See similar equations:

| 2v-17=v | | 10x+14+50=36 | | 2c=c+27 | | 3p+84=p+88 | | 0.80=0.6+x–0.6x | | 4w-28=-48 | | 12w+8=5w+15 | | 17a+2=19a | | 3-8(4x+9)=7 | | 2s+4=15s-22 | | 9p-95=5p-19 | | d+34=−14 | | 1÷6(y+42)-15=-3 | | 8z+15=18z–15 | | 2b+10=7-3b | | 19c-18=13c | | 2x+5=5x-4= | | 3w=w+38 | | y3=-2 | | 4(2-3x)=2(9-x) | | 5z+1/2=-9/2 | | 2x+5=5-4= | | y3= -2 | | 6w=w+70 | | j-4=-4 | | 4x+-3x=34+-8x | | (5x+1)/22=1/2 | | j-4= -4 | | (10x+2)/22=2 | | 3(a-3)=4a-11 | | k+-4=-9 | | 6.3-1.5x=-6 |

Equations solver categories