22x^2+8x-61=0

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Solution for 22x^2+8x-61=0 equation:


Simplifying
22x2 + 8x + -61 = 0

Reorder the terms:
-61 + 8x + 22x2 = 0

Solving
-61 + 8x + 22x2 = 0

Solving for variable 'x'.

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

Divide each side by '22'.
-2.772727273 + 0.3636363636x + x2 = 0

Move the constant term to the right:

Add '2.772727273' to each side of the equation.
-2.772727273 + 0.3636363636x + 2.772727273 + x2 = 0 + 2.772727273

Reorder the terms:
-2.772727273 + 2.772727273 + 0.3636363636x + x2 = 0 + 2.772727273

Combine like terms: -2.772727273 + 2.772727273 = 0.000000000
0.000000000 + 0.3636363636x + x2 = 0 + 2.772727273
0.3636363636x + x2 = 0 + 2.772727273

Combine like terms: 0 + 2.772727273 = 2.772727273
0.3636363636x + x2 = 2.772727273

The x term is 0.3636363636x.  Take half its coefficient (0.1818181818).
Square it (0.03305785123) and add it to both sides.

Add '0.03305785123' to each side of the equation.
0.3636363636x + 0.03305785123 + x2 = 2.772727273 + 0.03305785123

Reorder the terms:
0.03305785123 + 0.3636363636x + x2 = 2.772727273 + 0.03305785123

Combine like terms: 2.772727273 + 0.03305785123 = 2.80578512423
0.03305785123 + 0.3636363636x + x2 = 2.80578512423

Factor a perfect square on the left side:
(x + 0.1818181818)(x + 0.1818181818) = 2.80578512423

Calculate the square root of the right side: 1.675047798

Break this problem into two subproblems by setting 
(x + 0.1818181818) equal to 1.675047798 and -1.675047798.

Subproblem 1

x + 0.1818181818 = 1.675047798 Simplifying x + 0.1818181818 = 1.675047798 Reorder the terms: 0.1818181818 + x = 1.675047798 Solving 0.1818181818 + x = 1.675047798 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1818181818' to each side of the equation. 0.1818181818 + -0.1818181818 + x = 1.675047798 + -0.1818181818 Combine like terms: 0.1818181818 + -0.1818181818 = 0.0000000000 0.0000000000 + x = 1.675047798 + -0.1818181818 x = 1.675047798 + -0.1818181818 Combine like terms: 1.675047798 + -0.1818181818 = 1.4932296162 x = 1.4932296162 Simplifying x = 1.4932296162

Subproblem 2

x + 0.1818181818 = -1.675047798 Simplifying x + 0.1818181818 = -1.675047798 Reorder the terms: 0.1818181818 + x = -1.675047798 Solving 0.1818181818 + x = -1.675047798 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1818181818' to each side of the equation. 0.1818181818 + -0.1818181818 + x = -1.675047798 + -0.1818181818 Combine like terms: 0.1818181818 + -0.1818181818 = 0.0000000000 0.0000000000 + x = -1.675047798 + -0.1818181818 x = -1.675047798 + -0.1818181818 Combine like terms: -1.675047798 + -0.1818181818 = -1.8568659798 x = -1.8568659798 Simplifying x = -1.8568659798

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4932296162, -1.8568659798}

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