13x^2+36x-32=0

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Solution for 13x^2+36x-32=0 equation:


Simplifying
13x2 + 36x + -32 = 0

Reorder the terms:
-32 + 36x + 13x2 = 0

Solving
-32 + 36x + 13x2 = 0

Solving for variable 'x'.

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

Divide each side by '13'.
-2.461538462 + 2.769230769x + x2 = 0

Move the constant term to the right:

Add '2.461538462' to each side of the equation.
-2.461538462 + 2.769230769x + 2.461538462 + x2 = 0 + 2.461538462

Reorder the terms:
-2.461538462 + 2.461538462 + 2.769230769x + x2 = 0 + 2.461538462

Combine like terms: -2.461538462 + 2.461538462 = 0.000000000
0.000000000 + 2.769230769x + x2 = 0 + 2.461538462
2.769230769x + x2 = 0 + 2.461538462

Combine like terms: 0 + 2.461538462 = 2.461538462
2.769230769x + x2 = 2.461538462

The x term is 2.769230769x.  Take half its coefficient (1.384615385).
Square it (1.917159764) and add it to both sides.

Add '1.917159764' to each side of the equation.
2.769230769x + 1.917159764 + x2 = 2.461538462 + 1.917159764

Reorder the terms:
1.917159764 + 2.769230769x + x2 = 2.461538462 + 1.917159764

Combine like terms: 2.461538462 + 1.917159764 = 4.378698226
1.917159764 + 2.769230769x + x2 = 4.378698226

Factor a perfect square on the left side:
(x + 1.384615385)(x + 1.384615385) = 4.378698226

Calculate the square root of the right side: 2.092533925

Break this problem into two subproblems by setting 
(x + 1.384615385) equal to 2.092533925 and -2.092533925.

Subproblem 1

x + 1.384615385 = 2.092533925 Simplifying x + 1.384615385 = 2.092533925 Reorder the terms: 1.384615385 + x = 2.092533925 Solving 1.384615385 + x = 2.092533925 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.384615385' to each side of the equation. 1.384615385 + -1.384615385 + x = 2.092533925 + -1.384615385 Combine like terms: 1.384615385 + -1.384615385 = 0.000000000 0.000000000 + x = 2.092533925 + -1.384615385 x = 2.092533925 + -1.384615385 Combine like terms: 2.092533925 + -1.384615385 = 0.70791854 x = 0.70791854 Simplifying x = 0.70791854

Subproblem 2

x + 1.384615385 = -2.092533925 Simplifying x + 1.384615385 = -2.092533925 Reorder the terms: 1.384615385 + x = -2.092533925 Solving 1.384615385 + x = -2.092533925 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.384615385' to each side of the equation. 1.384615385 + -1.384615385 + x = -2.092533925 + -1.384615385 Combine like terms: 1.384615385 + -1.384615385 = 0.000000000 0.000000000 + x = -2.092533925 + -1.384615385 x = -2.092533925 + -1.384615385 Combine like terms: -2.092533925 + -1.384615385 = -3.47714931 x = -3.47714931 Simplifying x = -3.47714931

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.70791854, -3.47714931}

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