13x^2+8x=44

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Solution for 13x^2+8x=44 equation:


Simplifying
13x2 + 8x = 44

Reorder the terms:
8x + 13x2 = 44

Solving
8x + 13x2 = 44

Solving for variable 'x'.

Reorder the terms:
-44 + 8x + 13x2 = 44 + -44

Combine like terms: 44 + -44 = 0
-44 + 8x + 13x2 = 0

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

Divide each side by '13'.
-3.384615385 + 0.6153846154x + x2 = 0

Move the constant term to the right:

Add '3.384615385' to each side of the equation.
-3.384615385 + 0.6153846154x + 3.384615385 + x2 = 0 + 3.384615385

Reorder the terms:
-3.384615385 + 3.384615385 + 0.6153846154x + x2 = 0 + 3.384615385

Combine like terms: -3.384615385 + 3.384615385 = 0.000000000
0.000000000 + 0.6153846154x + x2 = 0 + 3.384615385
0.6153846154x + x2 = 0 + 3.384615385

Combine like terms: 0 + 3.384615385 = 3.384615385
0.6153846154x + x2 = 3.384615385

The x term is 0.6153846154x.  Take half its coefficient (0.3076923077).
Square it (0.09467455622) and add it to both sides.

Add '0.09467455622' to each side of the equation.
0.6153846154x + 0.09467455622 + x2 = 3.384615385 + 0.09467455622

Reorder the terms:
0.09467455622 + 0.6153846154x + x2 = 3.384615385 + 0.09467455622

Combine like terms: 3.384615385 + 0.09467455622 = 3.47928994122
0.09467455622 + 0.6153846154x + x2 = 3.47928994122

Factor a perfect square on the left side:
(x + 0.3076923077)(x + 0.3076923077) = 3.47928994122

Calculate the square root of the right side: 1.865285485

Break this problem into two subproblems by setting 
(x + 0.3076923077) equal to 1.865285485 and -1.865285485.

Subproblem 1

x + 0.3076923077 = 1.865285485 Simplifying x + 0.3076923077 = 1.865285485 Reorder the terms: 0.3076923077 + x = 1.865285485 Solving 0.3076923077 + x = 1.865285485 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3076923077' to each side of the equation. 0.3076923077 + -0.3076923077 + x = 1.865285485 + -0.3076923077 Combine like terms: 0.3076923077 + -0.3076923077 = 0.0000000000 0.0000000000 + x = 1.865285485 + -0.3076923077 x = 1.865285485 + -0.3076923077 Combine like terms: 1.865285485 + -0.3076923077 = 1.5575931773 x = 1.5575931773 Simplifying x = 1.5575931773

Subproblem 2

x + 0.3076923077 = -1.865285485 Simplifying x + 0.3076923077 = -1.865285485 Reorder the terms: 0.3076923077 + x = -1.865285485 Solving 0.3076923077 + x = -1.865285485 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3076923077' to each side of the equation. 0.3076923077 + -0.3076923077 + x = -1.865285485 + -0.3076923077 Combine like terms: 0.3076923077 + -0.3076923077 = 0.0000000000 0.0000000000 + x = -1.865285485 + -0.3076923077 x = -1.865285485 + -0.3076923077 Combine like terms: -1.865285485 + -0.3076923077 = -2.1729777927 x = -2.1729777927 Simplifying x = -2.1729777927

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.5575931773, -2.1729777927}

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