-0.0665x^2+3.58x+122=0

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Solution for -0.0665x^2+3.58x+122=0 equation:


Simplifying
-0.0665x2 + 3.58x + 122 = 0

Reorder the terms:
122 + 3.58x + -0.0665x2 = 0

Solving
122 + 3.58x + -0.0665x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.0665 the coefficient of the squared term: 

Divide each side by '-0.0665'.
-1834.586466 + -53.83458647x + x2 = 0

Move the constant term to the right:

Add '1834.586466' to each side of the equation.
-1834.586466 + -53.83458647x + 1834.586466 + x2 = 0 + 1834.586466

Reorder the terms:
-1834.586466 + 1834.586466 + -53.83458647x + x2 = 0 + 1834.586466

Combine like terms: -1834.586466 + 1834.586466 = 0.000000
0.000000 + -53.83458647x + x2 = 0 + 1834.586466
-53.83458647x + x2 = 0 + 1834.586466

Combine like terms: 0 + 1834.586466 = 1834.586466
-53.83458647x + x2 = 1834.586466

The x term is -53.83458647x.  Take half its coefficient (-26.91729324).
Square it (724.5406754) and add it to both sides.

Add '724.5406754' to each side of the equation.
-53.83458647x + 724.5406754 + x2 = 1834.586466 + 724.5406754

Reorder the terms:
724.5406754 + -53.83458647x + x2 = 1834.586466 + 724.5406754

Combine like terms: 1834.586466 + 724.5406754 = 2559.1271414
724.5406754 + -53.83458647x + x2 = 2559.1271414

Factor a perfect square on the left side:
(x + -26.91729324)(x + -26.91729324) = 2559.1271414

Calculate the square root of the right side: 50.587816136

Break this problem into two subproblems by setting 
(x + -26.91729324) equal to 50.587816136 and -50.587816136.

Subproblem 1

x + -26.91729324 = 50.587816136 Simplifying x + -26.91729324 = 50.587816136 Reorder the terms: -26.91729324 + x = 50.587816136 Solving -26.91729324 + x = 50.587816136 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '26.91729324' to each side of the equation. -26.91729324 + 26.91729324 + x = 50.587816136 + 26.91729324 Combine like terms: -26.91729324 + 26.91729324 = 0.00000000 0.00000000 + x = 50.587816136 + 26.91729324 x = 50.587816136 + 26.91729324 Combine like terms: 50.587816136 + 26.91729324 = 77.505109376 x = 77.505109376 Simplifying x = 77.505109376

Subproblem 2

x + -26.91729324 = -50.587816136 Simplifying x + -26.91729324 = -50.587816136 Reorder the terms: -26.91729324 + x = -50.587816136 Solving -26.91729324 + x = -50.587816136 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '26.91729324' to each side of the equation. -26.91729324 + 26.91729324 + x = -50.587816136 + 26.91729324 Combine like terms: -26.91729324 + 26.91729324 = 0.00000000 0.00000000 + x = -50.587816136 + 26.91729324 x = -50.587816136 + 26.91729324 Combine like terms: -50.587816136 + 26.91729324 = -23.670522896 x = -23.670522896 Simplifying x = -23.670522896

Solution

The solution to the problem is based on the solutions from the subproblems. x = {77.505109376, -23.670522896}

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