13x^2+53=56x

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Solution for 13x^2+53=56x equation:


Simplifying
13x2 + 53 = 56x

Reorder the terms:
53 + 13x2 = 56x

Solving
53 + 13x2 = 56x

Solving for variable 'x'.

Reorder the terms:
53 + -56x + 13x2 = 56x + -56x

Combine like terms: 56x + -56x = 0
53 + -56x + 13x2 = 0

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

Divide each side by '13'.
4.076923077 + -4.307692308x + x2 = 0

Move the constant term to the right:

Add '-4.076923077' to each side of the equation.
4.076923077 + -4.307692308x + -4.076923077 + x2 = 0 + -4.076923077

Reorder the terms:
4.076923077 + -4.076923077 + -4.307692308x + x2 = 0 + -4.076923077

Combine like terms: 4.076923077 + -4.076923077 = 0.000000000
0.000000000 + -4.307692308x + x2 = 0 + -4.076923077
-4.307692308x + x2 = 0 + -4.076923077

Combine like terms: 0 + -4.076923077 = -4.076923077
-4.307692308x + x2 = -4.076923077

The x term is -4.307692308x.  Take half its coefficient (-2.153846154).
Square it (4.639053255) and add it to both sides.

Add '4.639053255' to each side of the equation.
-4.307692308x + 4.639053255 + x2 = -4.076923077 + 4.639053255

Reorder the terms:
4.639053255 + -4.307692308x + x2 = -4.076923077 + 4.639053255

Combine like terms: -4.076923077 + 4.639053255 = 0.562130178
4.639053255 + -4.307692308x + x2 = 0.562130178

Factor a perfect square on the left side:
(x + -2.153846154)(x + -2.153846154) = 0.562130178

Calculate the square root of the right side: 0.749753411

Break this problem into two subproblems by setting 
(x + -2.153846154) equal to 0.749753411 and -0.749753411.

Subproblem 1

x + -2.153846154 = 0.749753411 Simplifying x + -2.153846154 = 0.749753411 Reorder the terms: -2.153846154 + x = 0.749753411 Solving -2.153846154 + x = 0.749753411 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.153846154' to each side of the equation. -2.153846154 + 2.153846154 + x = 0.749753411 + 2.153846154 Combine like terms: -2.153846154 + 2.153846154 = 0.000000000 0.000000000 + x = 0.749753411 + 2.153846154 x = 0.749753411 + 2.153846154 Combine like terms: 0.749753411 + 2.153846154 = 2.903599565 x = 2.903599565 Simplifying x = 2.903599565

Subproblem 2

x + -2.153846154 = -0.749753411 Simplifying x + -2.153846154 = -0.749753411 Reorder the terms: -2.153846154 + x = -0.749753411 Solving -2.153846154 + x = -0.749753411 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.153846154' to each side of the equation. -2.153846154 + 2.153846154 + x = -0.749753411 + 2.153846154 Combine like terms: -2.153846154 + 2.153846154 = 0.000000000 0.000000000 + x = -0.749753411 + 2.153846154 x = -0.749753411 + 2.153846154 Combine like terms: -0.749753411 + 2.153846154 = 1.404092743 x = 1.404092743 Simplifying x = 1.404092743

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.903599565, 1.404092743}

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