2x^2+1x-174=0

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Solution for 2x^2+1x-174=0 equation:


Simplifying
2x2 + 1x + -174 = 0

Reorder the terms:
-174 + 1x + 2x2 = 0

Solving
-174 + 1x + 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'.
-87 + 0.5x + x2 = 0

Move the constant term to the right:

Add '87' to each side of the equation.
-87 + 0.5x + 87 + x2 = 0 + 87

Reorder the terms:
-87 + 87 + 0.5x + x2 = 0 + 87

Combine like terms: -87 + 87 = 0
0 + 0.5x + x2 = 0 + 87
0.5x + x2 = 0 + 87

Combine like terms: 0 + 87 = 87
0.5x + x2 = 87

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = 87 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 87 + 0.0625

Combine like terms: 87 + 0.0625 = 87.0625
0.0625 + 0.5x + x2 = 87.0625

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 87.0625

Calculate the square root of the right side: 9.330728803

Break this problem into two subproblems by setting 
(x + 0.25) equal to 9.330728803 and -9.330728803.

Subproblem 1

x + 0.25 = 9.330728803 Simplifying x + 0.25 = 9.330728803 Reorder the terms: 0.25 + x = 9.330728803 Solving 0.25 + x = 9.330728803 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 9.330728803 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 9.330728803 + -0.25 x = 9.330728803 + -0.25 Combine like terms: 9.330728803 + -0.25 = 9.080728803 x = 9.080728803 Simplifying x = 9.080728803

Subproblem 2

x + 0.25 = -9.330728803 Simplifying x + 0.25 = -9.330728803 Reorder the terms: 0.25 + x = -9.330728803 Solving 0.25 + x = -9.330728803 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -9.330728803 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -9.330728803 + -0.25 x = -9.330728803 + -0.25 Combine like terms: -9.330728803 + -0.25 = -9.580728803 x = -9.580728803 Simplifying x = -9.580728803

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.080728803, -9.580728803}

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