169x^2-182x-61=0

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Solution for 169x^2-182x-61=0 equation:


Simplifying
169x2 + -182x + -61 = 0

Reorder the terms:
-61 + -182x + 169x2 = 0

Solving
-61 + -182x + 169x2 = 0

Solving for variable 'x'.

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

Divide each side by '169'.
-0.3609467456 + -1.076923077x + x2 = 0

Move the constant term to the right:

Add '0.3609467456' to each side of the equation.
-0.3609467456 + -1.076923077x + 0.3609467456 + x2 = 0 + 0.3609467456

Reorder the terms:
-0.3609467456 + 0.3609467456 + -1.076923077x + x2 = 0 + 0.3609467456

Combine like terms: -0.3609467456 + 0.3609467456 = 0.0000000000
0.0000000000 + -1.076923077x + x2 = 0 + 0.3609467456
-1.076923077x + x2 = 0 + 0.3609467456

Combine like terms: 0 + 0.3609467456 = 0.3609467456
-1.076923077x + x2 = 0.3609467456

The x term is -1.076923077x.  Take half its coefficient (-0.5384615385).
Square it (0.2899408284) and add it to both sides.

Add '0.2899408284' to each side of the equation.
-1.076923077x + 0.2899408284 + x2 = 0.3609467456 + 0.2899408284

Reorder the terms:
0.2899408284 + -1.076923077x + x2 = 0.3609467456 + 0.2899408284

Combine like terms: 0.3609467456 + 0.2899408284 = 0.650887574
0.2899408284 + -1.076923077x + x2 = 0.650887574

Factor a perfect square on the left side:
(x + -0.5384615385)(x + -0.5384615385) = 0.650887574

Calculate the square root of the right side: 0.806776037

Break this problem into two subproblems by setting 
(x + -0.5384615385) equal to 0.806776037 and -0.806776037.

Subproblem 1

x + -0.5384615385 = 0.806776037 Simplifying x + -0.5384615385 = 0.806776037 Reorder the terms: -0.5384615385 + x = 0.806776037 Solving -0.5384615385 + x = 0.806776037 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5384615385' to each side of the equation. -0.5384615385 + 0.5384615385 + x = 0.806776037 + 0.5384615385 Combine like terms: -0.5384615385 + 0.5384615385 = 0.0000000000 0.0000000000 + x = 0.806776037 + 0.5384615385 x = 0.806776037 + 0.5384615385 Combine like terms: 0.806776037 + 0.5384615385 = 1.3452375755 x = 1.3452375755 Simplifying x = 1.3452375755

Subproblem 2

x + -0.5384615385 = -0.806776037 Simplifying x + -0.5384615385 = -0.806776037 Reorder the terms: -0.5384615385 + x = -0.806776037 Solving -0.5384615385 + x = -0.806776037 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5384615385' to each side of the equation. -0.5384615385 + 0.5384615385 + x = -0.806776037 + 0.5384615385 Combine like terms: -0.5384615385 + 0.5384615385 = 0.0000000000 0.0000000000 + x = -0.806776037 + 0.5384615385 x = -0.806776037 + 0.5384615385 Combine like terms: -0.806776037 + 0.5384615385 = -0.2683144985 x = -0.2683144985 Simplifying x = -0.2683144985

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3452375755, -0.2683144985}

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