2x^2+102x+289=0

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Solution for 2x^2+102x+289=0 equation:


Simplifying
2x2 + 102x + 289 = 0

Reorder the terms:
289 + 102x + 2x2 = 0

Solving
289 + 102x + 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'.
144.5 + 51x + x2 = 0

Move the constant term to the right:

Add '-144.5' to each side of the equation.
144.5 + 51x + -144.5 + x2 = 0 + -144.5

Reorder the terms:
144.5 + -144.5 + 51x + x2 = 0 + -144.5

Combine like terms: 144.5 + -144.5 = 0.0
0.0 + 51x + x2 = 0 + -144.5
51x + x2 = 0 + -144.5

Combine like terms: 0 + -144.5 = -144.5
51x + x2 = -144.5

The x term is 51x.  Take half its coefficient (25.5).
Square it (650.25) and add it to both sides.

Add '650.25' to each side of the equation.
51x + 650.25 + x2 = -144.5 + 650.25

Reorder the terms:
650.25 + 51x + x2 = -144.5 + 650.25

Combine like terms: -144.5 + 650.25 = 505.75
650.25 + 51x + x2 = 505.75

Factor a perfect square on the left side:
(x + 25.5)(x + 25.5) = 505.75

Calculate the square root of the right side: 22.488886144

Break this problem into two subproblems by setting 
(x + 25.5) equal to 22.488886144 and -22.488886144.

Subproblem 1

x + 25.5 = 22.488886144 Simplifying x + 25.5 = 22.488886144 Reorder the terms: 25.5 + x = 22.488886144 Solving 25.5 + x = 22.488886144 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-25.5' to each side of the equation. 25.5 + -25.5 + x = 22.488886144 + -25.5 Combine like terms: 25.5 + -25.5 = 0.0 0.0 + x = 22.488886144 + -25.5 x = 22.488886144 + -25.5 Combine like terms: 22.488886144 + -25.5 = -3.011113856 x = -3.011113856 Simplifying x = -3.011113856

Subproblem 2

x + 25.5 = -22.488886144 Simplifying x + 25.5 = -22.488886144 Reorder the terms: 25.5 + x = -22.488886144 Solving 25.5 + x = -22.488886144 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-25.5' to each side of the equation. 25.5 + -25.5 + x = -22.488886144 + -25.5 Combine like terms: 25.5 + -25.5 = 0.0 0.0 + x = -22.488886144 + -25.5 x = -22.488886144 + -25.5 Combine like terms: -22.488886144 + -25.5 = -47.988886144 x = -47.988886144 Simplifying x = -47.988886144

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.011113856, -47.988886144}

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