2x^2-35x-108=0

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Solution for 2x^2-35x-108=0 equation:


Simplifying
2x2 + -35x + -108 = 0

Reorder the terms:
-108 + -35x + 2x2 = 0

Solving
-108 + -35x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-54 + -17.5x + x2 = 0

Move the constant term to the right:

Add '54' to each side of the equation.
-54 + -17.5x + 54 + x2 = 0 + 54

Reorder the terms:
-54 + 54 + -17.5x + x2 = 0 + 54

Combine like terms: -54 + 54 = 0
0 + -17.5x + x2 = 0 + 54
-17.5x + x2 = 0 + 54

Combine like terms: 0 + 54 = 54
-17.5x + x2 = 54

The x term is -17.5x.  Take half its coefficient (-8.75).
Square it (76.5625) and add it to both sides.

Add '76.5625' to each side of the equation.
-17.5x + 76.5625 + x2 = 54 + 76.5625

Reorder the terms:
76.5625 + -17.5x + x2 = 54 + 76.5625

Combine like terms: 54 + 76.5625 = 130.5625
76.5625 + -17.5x + x2 = 130.5625

Factor a perfect square on the left side:
(x + -8.75)(x + -8.75) = 130.5625

Calculate the square root of the right side: 11.426394882

Break this problem into two subproblems by setting 
(x + -8.75) equal to 11.426394882 and -11.426394882.

Subproblem 1

x + -8.75 = 11.426394882 Simplifying x + -8.75 = 11.426394882 Reorder the terms: -8.75 + x = 11.426394882 Solving -8.75 + x = 11.426394882 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.75' to each side of the equation. -8.75 + 8.75 + x = 11.426394882 + 8.75 Combine like terms: -8.75 + 8.75 = 0.00 0.00 + x = 11.426394882 + 8.75 x = 11.426394882 + 8.75 Combine like terms: 11.426394882 + 8.75 = 20.176394882 x = 20.176394882 Simplifying x = 20.176394882

Subproblem 2

x + -8.75 = -11.426394882 Simplifying x + -8.75 = -11.426394882 Reorder the terms: -8.75 + x = -11.426394882 Solving -8.75 + x = -11.426394882 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.75' to each side of the equation. -8.75 + 8.75 + x = -11.426394882 + 8.75 Combine like terms: -8.75 + 8.75 = 0.00 0.00 + x = -11.426394882 + 8.75 x = -11.426394882 + 8.75 Combine like terms: -11.426394882 + 8.75 = -2.676394882 x = -2.676394882 Simplifying x = -2.676394882

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.176394882, -2.676394882}

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