0=13x^2+22x-17

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Solution for 0=13x^2+22x-17 equation:


Simplifying
0 = 13x2 + 22x + -17

Reorder the terms:
0 = -17 + 22x + 13x2

Solving
0 = -17 + 22x + 13x2

Solving for variable 'x'.

Combine like terms: 0 + 17 = 17
17 + -22x + -13x2 = -17 + 22x + 13x2 + 17 + -22x + -13x2

Reorder the terms:
17 + -22x + -13x2 = -17 + 17 + 22x + -22x + 13x2 + -13x2

Combine like terms: -17 + 17 = 0
17 + -22x + -13x2 = 0 + 22x + -22x + 13x2 + -13x2
17 + -22x + -13x2 = 22x + -22x + 13x2 + -13x2

Combine like terms: 22x + -22x = 0
17 + -22x + -13x2 = 0 + 13x2 + -13x2
17 + -22x + -13x2 = 13x2 + -13x2

Combine like terms: 13x2 + -13x2 = 0
17 + -22x + -13x2 = 0

Begin completing the square.  Divide all terms by
-13 the coefficient of the squared term: 

Divide each side by '-13'.
-1.307692308 + 1.692307692x + x2 = 0

Move the constant term to the right:

Add '1.307692308' to each side of the equation.
-1.307692308 + 1.692307692x + 1.307692308 + x2 = 0 + 1.307692308

Reorder the terms:
-1.307692308 + 1.307692308 + 1.692307692x + x2 = 0 + 1.307692308

Combine like terms: -1.307692308 + 1.307692308 = 0.000000000
0.000000000 + 1.692307692x + x2 = 0 + 1.307692308
1.692307692x + x2 = 0 + 1.307692308

Combine like terms: 0 + 1.307692308 = 1.307692308
1.692307692x + x2 = 1.307692308

The x term is 1.692307692x.  Take half its coefficient (0.846153846).
Square it (0.7159763311) and add it to both sides.

Add '0.7159763311' to each side of the equation.
1.692307692x + 0.7159763311 + x2 = 1.307692308 + 0.7159763311

Reorder the terms:
0.7159763311 + 1.692307692x + x2 = 1.307692308 + 0.7159763311

Combine like terms: 1.307692308 + 0.7159763311 = 2.0236686391
0.7159763311 + 1.692307692x + x2 = 2.0236686391

Factor a perfect square on the left side:
(x + 0.846153846)(x + 0.846153846) = 2.0236686391

Calculate the square root of the right side: 1.422557078

Break this problem into two subproblems by setting 
(x + 0.846153846) equal to 1.422557078 and -1.422557078.

Subproblem 1

x + 0.846153846 = 1.422557078 Simplifying x + 0.846153846 = 1.422557078 Reorder the terms: 0.846153846 + x = 1.422557078 Solving 0.846153846 + x = 1.422557078 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.846153846' to each side of the equation. 0.846153846 + -0.846153846 + x = 1.422557078 + -0.846153846 Combine like terms: 0.846153846 + -0.846153846 = 0.000000000 0.000000000 + x = 1.422557078 + -0.846153846 x = 1.422557078 + -0.846153846 Combine like terms: 1.422557078 + -0.846153846 = 0.576403232 x = 0.576403232 Simplifying x = 0.576403232

Subproblem 2

x + 0.846153846 = -1.422557078 Simplifying x + 0.846153846 = -1.422557078 Reorder the terms: 0.846153846 + x = -1.422557078 Solving 0.846153846 + x = -1.422557078 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.846153846' to each side of the equation. 0.846153846 + -0.846153846 + x = -1.422557078 + -0.846153846 Combine like terms: 0.846153846 + -0.846153846 = 0.000000000 0.000000000 + x = -1.422557078 + -0.846153846 x = -1.422557078 + -0.846153846 Combine like terms: -1.422557078 + -0.846153846 = -2.268710924 x = -2.268710924 Simplifying x = -2.268710924

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.576403232, -2.268710924}

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