81x^2-108x-29=0

Simple and best practice solution for 81x^2-108x-29=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 81x^2-108x-29=0 equation:


Simplifying
81x2 + -108x + -29 = 0

Reorder the terms:
-29 + -108x + 81x2 = 0

Solving
-29 + -108x + 81x2 = 0

Solving for variable 'x'.

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

Divide each side by '81'.
-0.3580246914 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '0.3580246914' to each side of the equation.
-0.3580246914 + -1.333333333x + 0.3580246914 + x2 = 0 + 0.3580246914

Reorder the terms:
-0.3580246914 + 0.3580246914 + -1.333333333x + x2 = 0 + 0.3580246914

Combine like terms: -0.3580246914 + 0.3580246914 = 0.0000000000
0.0000000000 + -1.333333333x + x2 = 0 + 0.3580246914
-1.333333333x + x2 = 0 + 0.3580246914

Combine like terms: 0 + 0.3580246914 = 0.3580246914
-1.333333333x + x2 = 0.3580246914

The x term is -1.333333333x.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333x + 0.4444444442 + x2 = 0.3580246914 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = 0.3580246914 + 0.4444444442

Combine like terms: 0.3580246914 + 0.4444444442 = 0.8024691356
0.4444444442 + -1.333333333x + x2 = 0.8024691356

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = 0.8024691356

Calculate the square root of the right side: 0.895806416

Break this problem into two subproblems by setting 
(x + -0.6666666665) equal to 0.895806416 and -0.895806416.

Subproblem 1

x + -0.6666666665 = 0.895806416 Simplifying x + -0.6666666665 = 0.895806416 Reorder the terms: -0.6666666665 + x = 0.895806416 Solving -0.6666666665 + x = 0.895806416 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = 0.895806416 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = 0.895806416 + 0.6666666665 x = 0.895806416 + 0.6666666665 Combine like terms: 0.895806416 + 0.6666666665 = 1.5624730825 x = 1.5624730825 Simplifying x = 1.5624730825

Subproblem 2

x + -0.6666666665 = -0.895806416 Simplifying x + -0.6666666665 = -0.895806416 Reorder the terms: -0.6666666665 + x = -0.895806416 Solving -0.6666666665 + x = -0.895806416 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = -0.895806416 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = -0.895806416 + 0.6666666665 x = -0.895806416 + 0.6666666665 Combine like terms: -0.895806416 + 0.6666666665 = -0.2291397495 x = -0.2291397495 Simplifying x = -0.2291397495

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.5624730825, -0.2291397495}

See similar equations:

| 11x^3-x^2-143x+13=0 | | 7x+7y=6155 | | Y-5=-3/4(x-3) | | Y^2+2y+2x-7=0 | | =(5n^6-1n-5n^4)+(5n^4+4n^6+3n) | | x+33=5x+5 | | Y-2=-8(x-9) | | x-4/14=8/7 | | 3x+4=2(x-4) | | a+a-8+2(a-8)=72 | | ax^2+ay-bx^2-by=0 | | x/12=11/6 | | 5x-1=3(x+9) | | 4(5x-3)-(6x+2)= | | -16x^2+48x+28=0 | | 6.9x+1=5.9x | | -3(t-5)-6= | | 15w^3+7w^2-2w=0 | | n+8*5=2n | | 5x(x+30)=720 | | 3a+4=5b-10 | | 5x(x+3)=720 | | (3x^2)-5x+1=0 | | 11x-(2-4x)=13+2(x-1) | | 6-2x-x-3+5x= | | .75x-5=10 | | 2*T=12 | | 13(v+3)-4v=3(3v+1)-8 | | 8x+6+2x+3= | | og[2](3x-1)=5 | | 81x^2-108x+29=0 | | 12(x+4)=4(3x+3)+36 |

Equations solver categories