8x^2+8x+1=0

Simple and best practice solution for 8x^2+8x+1=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+8x+1=0 equation:


Simplifying
8x2 + 8x + 1 = 0

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

Solving
1 + 8x + 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'.
0.125 + x + x2 = 0

Move the constant term to the right:

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

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

Combine like terms: 0.125 + -0.125 = 0.000
0.000 + x + x2 = 0 + -0.125
x + x2 = 0 + -0.125

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

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = -0.125 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = -0.125 + 0.25

Combine like terms: -0.125 + 0.25 = 0.125
1.25 + x2 = 0.125

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.125

Calculate the square root of the right side: 0.353553391

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.353553391 and -0.353553391.

Subproblem 1

x + 0.5 = 0.353553391 Simplifying x + 0.5 = 0.353553391 Reorder the terms: 0.5 + x = 0.353553391 Solving 0.5 + x = 0.353553391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.353553391 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.353553391 + -0.5 x = 0.353553391 + -0.5 Combine like terms: 0.353553391 + -0.5 = -0.146446609 x = -0.146446609 Simplifying x = -0.146446609

Subproblem 2

x + 0.5 = -0.353553391 Simplifying x + 0.5 = -0.353553391 Reorder the terms: 0.5 + x = -0.353553391 Solving 0.5 + x = -0.353553391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.353553391 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.353553391 + -0.5 x = -0.353553391 + -0.5 Combine like terms: -0.353553391 + -0.5 = -0.853553391 x = -0.853553391 Simplifying x = -0.853553391

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.146446609, -0.853553391}

See similar equations:

| 15x(5-3)=30 | | 9x^2+12x+2=0 | | 7x+30=-x-2 | | 8x-66=6x-8 | | 0.56x=0.23x | | 48-25x=-31x | | 7(z-7)-(8z-1)=-2z | | 5(2y+1)=3y-2 | | 8(w+4)=8+7w | | 14-2x= | | 4x^2-20=180 | | 5x^100=80 | | 2x+3+5x=15 | | 9(z-6)=8z | | 8x+5-6x=9+x+10 | | 3.2+m=.7 | | 2x^2-2x-112=0 | | -21=4b+19-(-6b) | | -8x=35-3x | | 228-2x=34x+24 | | 3z-6=6z-4z | | 9=5x+2 | | -3z-17-2z=-3 | | -8x=42+11x-4 | | 8+(-4)= | | -2.1=3a+10.5 | | 16x+45=13x | | 8x-3=5x+12 | | 2x^3-10x^2+4x+16= | | 4r+-6r=24 | | 5x^2-245=0 | | 10x=98 |

Equations solver categories