x2+8x+4=0

Simple and best practice solution for x2+8x+4=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 x2+8x+4=0 equation:



x2+8x+4=0
We add all the numbers together, and all the variables
x^2+8x+4=0
a = 1; b = 8; c = +4;
Δ = b2-4ac
Δ = 82-4·1·4
Δ = 48
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{48}=\sqrt{16*3}=\sqrt{16}*\sqrt{3}=4\sqrt{3}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(8)-4\sqrt{3}}{2*1}=\frac{-8-4\sqrt{3}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8)+4\sqrt{3}}{2*1}=\frac{-8+4\sqrt{3}}{2} $

See similar equations:

| 9-(2-3x)=6+2x-(6+x) | | –0.2(5x–1)=x | | 27/x+8=11 | | ?(m-4)=7m-28 | | Y-1/2+y+1/3=15 | | (8+x)/x=12/6 | | 3j+1=2j+5 | | (D^2+4+3)y=0 | | 2/n=4/3/2 | | 4(x+3)=6-5(x-3) | | n/8=3/5= | | n/8=3/5 | | 3x+4+2x=16+3x | | (5/6)x+3x=4 | | 8x-1728/x²=0 | | 8x-1728/x²=V | | 5/4(x+3)=25 | | (7/8)b=4b+3 | | 6-4x=2x+3 | | 10h+6-2=15 | | -6(b+3)=4 | | 5+3/4p=1/4p-6 | | 15-4c=1 | | s-0.0432=0.085 | | (x-6)(2x-6)=20x | | 2(a-3)+5=0 | | 4x-56=-16 | | 3x+5=7(3x+4)=9x-6 | | k6+8=5 | | 8(5a-1)=0 | | 0=100t2-15t+5 | | (1-x)2+25=16 |

Equations solver categories