3d^2+7d-8=0

Simple and best practice solution for 3d^2+7d-8=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 3d^2+7d-8=0 equation: 



3d^2+7d-8=0

a = 3; b = 7; c = -8;
Δ = b2-4ac
Δ = 72-4·3·(-8)
Δ = 145
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{145}}{2*3}=\frac{-7-\sqrt{145}}{6}
$


$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{145}}{2*3}=\frac{-7+\sqrt{145}}{6}
$

See similar equations:

| 66x-18=-40x | | 14+3m=26 | | 7x+81-6=180 | | -6(-2x+4)=-60 | | 0.4x+2=5.2x-0.4 | | ×^2+20x+64=0 | | 5c−4−2c+1=8c+2 | | 0.4x+2=5.2x-0.5 | | 10x-4+6(x+2)=180 | | 4(x+4)=14 | | -2(30-6x)=4(x+19) | | 12.5+s=27 | | p-4.2=-4.1 | | x=2/3(18) | | -4/5-1/2x=-8/7 | | -54.87=5.9x | | 7(-3x-7)=-196 | | 0.5-0.2x=6 | | 2(3x+7)-2x=-18 | | -1.7=b/7 | | -3.288=x-0.288 | | (2x+9)(5x)=120 | | 3(3x+7)-3x=-18 | | 0.46+0.32=0.56x-0.28 | | 4=16x-4x5x-8 | | 5.25+24t=12.45+12t | | n+9.9=7.5 | | |x+11|=|2x+7| | | (2x+9)=(5x) | | y-8y=16 | | 3(6x+7)=-141 | | (5x)=(2x+9) |

Equations solver categories