8x^2-x+4=0

Simple and best practice solution for 8x^2-x+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 8x^2-x+4=0 equation:


Simplifying
8x2 + -1x + 4 = 0

Reorder the terms:
4 + -1x + 8x2 = 0

Solving
4 + -1x + 8x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
8 the coefficient of the squared term: 

Divide each side by '8'.
0.5 + -0.125x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -0.125x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -0.125x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -0.125x + x2 = 0 + -0.5
-0.125x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-0.125x + x2 = -0.5

The x term is -0.125x.  Take half its coefficient (-0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
-0.125x + 0.00390625 + x2 = -0.5 + 0.00390625

Reorder the terms:
0.00390625 + -0.125x + x2 = -0.5 + 0.00390625

Combine like terms: -0.5 + 0.00390625 = -0.49609375
0.00390625 + -0.125x + x2 = -0.49609375

Factor a perfect square on the left side:
(x + -0.0625)(x + -0.0625) = -0.49609375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 8-x+4=0 | | 256*10x=1.62 | | t=4s | | 2(4x-3)-8=2x+4 | | 4x=4-5(x+2) | | 12x+4=15x-2 | | 9-7x=23 | | 3y=4+y | | 3x=185 | | n=.70(70) | | 15+5(z-3)=4z+5 | | 3x-10=65-2x | | 0.56+0.24t=3.59t-0.78 | | n=.30(40) | | c=90+3n | | 3.9x+57.9=33.1-8.5x | | n=.52(80) | | 4x+10=56 | | 3u+9v=12 | | -4x-43=-9x+52 | | 2(3+6x)-2=40 | | -16t^2+90t+7=0 | | 4x-2=-42 | | 36y-5y-12= | | x^2-.4x-.2=-.2 | | 3(4x-2)=30 | | 2.7y-3.1=5 | | 2(x+7)-4=24 | | n=.23(82) | | 7(2+c)=6(c-5) | | 0.9x-1.3=0.5 | | n=41.6 |

Equations solver categories