36-37x+9x^2=0

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Solution for 36-37x+9x^2=0 equation:


Simplifying
36 + -37x + 9x2 = 0

Solving
36 + -37x + 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'.
4 + -4.111111111x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -4.111111111x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + -4.111111111x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -4.111111111x + x2 = 0 + -4
-4.111111111x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-4.111111111x + x2 = -4

The x term is -4.111111111x.  Take half its coefficient (-2.055555556).
Square it (4.225308644) and add it to both sides.

Add '4.225308644' to each side of the equation.
-4.111111111x + 4.225308644 + x2 = -4 + 4.225308644

Reorder the terms:
4.225308644 + -4.111111111x + x2 = -4 + 4.225308644

Combine like terms: -4 + 4.225308644 = 0.225308644
4.225308644 + -4.111111111x + x2 = 0.225308644

Factor a perfect square on the left side:
(x + -2.055555556)(x + -2.055555556) = 0.225308644

Calculate the square root of the right side: 0.474666877

Break this problem into two subproblems by setting 
(x + -2.055555556) equal to 0.474666877 and -0.474666877.

Subproblem 1

x + -2.055555556 = 0.474666877 Simplifying x + -2.055555556 = 0.474666877 Reorder the terms: -2.055555556 + x = 0.474666877 Solving -2.055555556 + x = 0.474666877 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.055555556' to each side of the equation. -2.055555556 + 2.055555556 + x = 0.474666877 + 2.055555556 Combine like terms: -2.055555556 + 2.055555556 = 0.000000000 0.000000000 + x = 0.474666877 + 2.055555556 x = 0.474666877 + 2.055555556 Combine like terms: 0.474666877 + 2.055555556 = 2.530222433 x = 2.530222433 Simplifying x = 2.530222433

Subproblem 2

x + -2.055555556 = -0.474666877 Simplifying x + -2.055555556 = -0.474666877 Reorder the terms: -2.055555556 + x = -0.474666877 Solving -2.055555556 + x = -0.474666877 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.055555556' to each side of the equation. -2.055555556 + 2.055555556 + x = -0.474666877 + 2.055555556 Combine like terms: -2.055555556 + 2.055555556 = 0.000000000 0.000000000 + x = -0.474666877 + 2.055555556 x = -0.474666877 + 2.055555556 Combine like terms: -0.474666877 + 2.055555556 = 1.580888679 x = 1.580888679 Simplifying x = 1.580888679

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.530222433, 1.580888679}

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