-8x^2-10x-4=0

Simple and best practice solution for -8x^2-10x-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^2-10x-4=0 equation: 


Simplifying
-8x2 + -10x + -4 = 0

Reorder the terms:
-4 + -10x + -8x2 = 0

Solving
-4 + -10x + -8x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-2'.
-2(2 + 5x + 4x2) = 0

Ignore the factor -2.

Subproblem 1
Set the factor '(2 + 5x + 4x2)' equal to zero and attempt to solve:

Simplifying
2 + 5x + 4x2 = 0

Solving
2 + 5x + 4x2 = 0

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

Divide each side by '4'.
0.5 + 1.25x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + 1.25x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + 1.25x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + 1.25x + x2 = 0 + -0.5
1.25x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
1.25x + x2 = -0.5

The x term is 1.25x.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25x + 0.390625 + x2 = -0.5 + 0.390625

Reorder the terms:
0.390625 + 1.25x + x2 = -0.5 + 0.390625

Combine like terms: -0.5 + 0.390625 = -0.109375
0.390625 + 1.25x + x2 = -0.109375

Factor a perfect square on the left side:
(x + 0.625)(x + 0.625) = -0.109375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

See similar equations:

| 2x+6+80=140 | | 3-8x=5-7x | | m+13=66 | | 11m^2-122+11=0 | | 25x^2-15x-20=0 | | -(x-3)(x-8)=0 | | 6.8+x=0.5 | | -19=113-6x | | 96=n-(12+3) | | 4*n*5+3.5*n*5+(-2.1*n*5)= | | 3a-(a+b)+(2a-3b)=0 | | 4x-ax-bx= | | 6(y-2)=6y+2-2(2y-6) | | 9v-4v=45 | | 3x-7=4(x+3) | | 7a-a=48 | | -3*x*y*3+7*x*y*3+(-x*y*3)+(-3*x*y*3)= | | cos(60)=5/h | | 16u^2-172u-44=0 | | 2v-(3-4v)= | | 54=4j | | 80k^2-72k=0 | | 5-1=-6 | | x+2x-26=2x+18 | | x^3+4x-14=0 | | 99=h+11 | | 9y^2-35y-4=0 | | -8+m=-5 | | 15t^2+23t+4=0 | | m-521=593 | | 4.27E+13= | | 13b+4(5+7b)= |

Equations solver categories