9x^2-36x-32=0

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Solution for 9x^2-36x-32=0 equation:


Simplifying
9x2 + -36x + -32 = 0

Reorder the terms:
-32 + -36x + 9x2 = 0

Solving
-32 + -36x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-3.555555556 + -4x + x2 = 0

Move the constant term to the right:

Add '3.555555556' to each side of the equation.
-3.555555556 + -4x + 3.555555556 + x2 = 0 + 3.555555556

Reorder the terms:
-3.555555556 + 3.555555556 + -4x + x2 = 0 + 3.555555556

Combine like terms: -3.555555556 + 3.555555556 = 0.000000000
0.000000000 + -4x + x2 = 0 + 3.555555556
-4x + x2 = 0 + 3.555555556

Combine like terms: 0 + 3.555555556 = 3.555555556
-4x + x2 = 3.555555556

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 3.555555556 + 4

Reorder the terms:
4 + -4x + x2 = 3.555555556 + 4

Combine like terms: 3.555555556 + 4 = 7.555555556
4 + -4x + x2 = 7.555555556

Factor a perfect square on the left side:
(x + -2)(x + -2) = 7.555555556

Calculate the square root of the right side: 2.748737084

Break this problem into two subproblems by setting 
(x + -2) equal to 2.748737084 and -2.748737084.

Subproblem 1

x + -2 = 2.748737084 Simplifying x + -2 = 2.748737084 Reorder the terms: -2 + x = 2.748737084 Solving -2 + x = 2.748737084 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 2.748737084 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.748737084 + 2 x = 2.748737084 + 2 Combine like terms: 2.748737084 + 2 = 4.748737084 x = 4.748737084 Simplifying x = 4.748737084

Subproblem 2

x + -2 = -2.748737084 Simplifying x + -2 = -2.748737084 Reorder the terms: -2 + x = -2.748737084 Solving -2 + x = -2.748737084 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -2.748737084 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.748737084 + 2 x = -2.748737084 + 2 Combine like terms: -2.748737084 + 2 = -0.748737084 x = -0.748737084 Simplifying x = -0.748737084

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.748737084, -0.748737084}

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