11x^2-2x+13=17x^2-15x+3

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Solution for 11x^2-2x+13=17x^2-15x+3 equation:


Simplifying
11x2 + -2x + 13 = 17x2 + -15x + 3

Reorder the terms:
13 + -2x + 11x2 = 17x2 + -15x + 3

Reorder the terms:
13 + -2x + 11x2 = 3 + -15x + 17x2

Solving
13 + -2x + 11x2 = 3 + -15x + 17x2

Solving for variable 'x'.

Reorder the terms:
13 + -3 + -2x + 15x + 11x2 + -17x2 = 3 + -15x + 17x2 + -3 + 15x + -17x2

Combine like terms: 13 + -3 = 10
10 + -2x + 15x + 11x2 + -17x2 = 3 + -15x + 17x2 + -3 + 15x + -17x2

Combine like terms: -2x + 15x = 13x
10 + 13x + 11x2 + -17x2 = 3 + -15x + 17x2 + -3 + 15x + -17x2

Combine like terms: 11x2 + -17x2 = -6x2
10 + 13x + -6x2 = 3 + -15x + 17x2 + -3 + 15x + -17x2

Reorder the terms:
10 + 13x + -6x2 = 3 + -3 + -15x + 15x + 17x2 + -17x2

Combine like terms: 3 + -3 = 0
10 + 13x + -6x2 = 0 + -15x + 15x + 17x2 + -17x2
10 + 13x + -6x2 = -15x + 15x + 17x2 + -17x2

Combine like terms: -15x + 15x = 0
10 + 13x + -6x2 = 0 + 17x2 + -17x2
10 + 13x + -6x2 = 17x2 + -17x2

Combine like terms: 17x2 + -17x2 = 0
10 + 13x + -6x2 = 0

Begin completing the square.  Divide all terms by
-6 the coefficient of the squared term: 

Divide each side by '-6'.
-1.666666667 + -2.166666667x + x2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + -2.166666667x + 1.666666667 + x2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + -2.166666667x + x2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + -2.166666667x + x2 = 0 + 1.666666667
-2.166666667x + x2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
-2.166666667x + x2 = 1.666666667

The x term is -2.166666667x.  Take half its coefficient (-1.083333334).
Square it (1.173611113) and add it to both sides.

Add '1.173611113' to each side of the equation.
-2.166666667x + 1.173611113 + x2 = 1.666666667 + 1.173611113

Reorder the terms:
1.173611113 + -2.166666667x + x2 = 1.666666667 + 1.173611113

Combine like terms: 1.666666667 + 1.173611113 = 2.84027778
1.173611113 + -2.166666667x + x2 = 2.84027778

Factor a perfect square on the left side:
(x + -1.083333334)(x + -1.083333334) = 2.84027778

Calculate the square root of the right side: 1.685312369

Break this problem into two subproblems by setting 
(x + -1.083333334) equal to 1.685312369 and -1.685312369.

Subproblem 1

x + -1.083333334 = 1.685312369 Simplifying x + -1.083333334 = 1.685312369 Reorder the terms: -1.083333334 + x = 1.685312369 Solving -1.083333334 + x = 1.685312369 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.083333334' to each side of the equation. -1.083333334 + 1.083333334 + x = 1.685312369 + 1.083333334 Combine like terms: -1.083333334 + 1.083333334 = 0.000000000 0.000000000 + x = 1.685312369 + 1.083333334 x = 1.685312369 + 1.083333334 Combine like terms: 1.685312369 + 1.083333334 = 2.768645703 x = 2.768645703 Simplifying x = 2.768645703

Subproblem 2

x + -1.083333334 = -1.685312369 Simplifying x + -1.083333334 = -1.685312369 Reorder the terms: -1.083333334 + x = -1.685312369 Solving -1.083333334 + x = -1.685312369 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.083333334' to each side of the equation. -1.083333334 + 1.083333334 + x = -1.685312369 + 1.083333334 Combine like terms: -1.083333334 + 1.083333334 = 0.000000000 0.000000000 + x = -1.685312369 + 1.083333334 x = -1.685312369 + 1.083333334 Combine like terms: -1.685312369 + 1.083333334 = -0.601979035 x = -0.601979035 Simplifying x = -0.601979035

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.768645703, -0.601979035}

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