.33x^2+8x-3=0

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Solution for .33x^2+8x-3=0 equation:


Simplifying
0.33x2 + 8x + -3 = 0

Reorder the terms:
-3 + 8x + 0.33x2 = 0

Solving
-3 + 8x + 0.33x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.33'.
-9.090909091 + 24.24242424x + x2 = 0

Move the constant term to the right:

Add '9.090909091' to each side of the equation.
-9.090909091 + 24.24242424x + 9.090909091 + x2 = 0 + 9.090909091

Reorder the terms:
-9.090909091 + 9.090909091 + 24.24242424x + x2 = 0 + 9.090909091

Combine like terms: -9.090909091 + 9.090909091 = 0.000000000
0.000000000 + 24.24242424x + x2 = 0 + 9.090909091
24.24242424x + x2 = 0 + 9.090909091

Combine like terms: 0 + 9.090909091 = 9.090909091
24.24242424x + x2 = 9.090909091

The x term is 24.24242424x.  Take half its coefficient (12.12121212).
Square it (146.9237833) and add it to both sides.

Add '146.9237833' to each side of the equation.
24.24242424x + 146.9237833 + x2 = 9.090909091 + 146.9237833

Reorder the terms:
146.9237833 + 24.24242424x + x2 = 9.090909091 + 146.9237833

Combine like terms: 9.090909091 + 146.9237833 = 156.014692391
146.9237833 + 24.24242424x + x2 = 156.014692391

Factor a perfect square on the left side:
(x + 12.12121212)(x + 12.12121212) = 156.014692391

Calculate the square root of the right side: 12.490584149

Break this problem into two subproblems by setting 
(x + 12.12121212) equal to 12.490584149 and -12.490584149.

Subproblem 1

x + 12.12121212 = 12.490584149 Simplifying x + 12.12121212 = 12.490584149 Reorder the terms: 12.12121212 + x = 12.490584149 Solving 12.12121212 + x = 12.490584149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.12121212' to each side of the equation. 12.12121212 + -12.12121212 + x = 12.490584149 + -12.12121212 Combine like terms: 12.12121212 + -12.12121212 = 0.00000000 0.00000000 + x = 12.490584149 + -12.12121212 x = 12.490584149 + -12.12121212 Combine like terms: 12.490584149 + -12.12121212 = 0.369372029 x = 0.369372029 Simplifying x = 0.369372029

Subproblem 2

x + 12.12121212 = -12.490584149 Simplifying x + 12.12121212 = -12.490584149 Reorder the terms: 12.12121212 + x = -12.490584149 Solving 12.12121212 + x = -12.490584149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.12121212' to each side of the equation. 12.12121212 + -12.12121212 + x = -12.490584149 + -12.12121212 Combine like terms: 12.12121212 + -12.12121212 = 0.00000000 0.00000000 + x = -12.490584149 + -12.12121212 x = -12.490584149 + -12.12121212 Combine like terms: -12.490584149 + -12.12121212 = -24.611796269 x = -24.611796269 Simplifying x = -24.611796269

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.369372029, -24.611796269}

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