9x^2-36x+1=0

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Solution for 9x^2-36x+1=0 equation:


Simplifying
9x2 + -36x + 1 = 0

Reorder the terms:
1 + -36x + 9x2 = 0

Solving
1 + -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'.
0.1111111111 + -4x + x2 = 0

Move the constant term to the right:

Add '-0.1111111111' to each side of the equation.
0.1111111111 + -4x + -0.1111111111 + x2 = 0 + -0.1111111111

Reorder the terms:
0.1111111111 + -0.1111111111 + -4x + x2 = 0 + -0.1111111111

Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000
0.0000000000 + -4x + x2 = 0 + -0.1111111111
-4x + x2 = 0 + -0.1111111111

Combine like terms: 0 + -0.1111111111 = -0.1111111111
-4x + x2 = -0.1111111111

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 = -0.1111111111 + 4

Reorder the terms:
4 + -4x + x2 = -0.1111111111 + 4

Combine like terms: -0.1111111111 + 4 = 3.8888888889
4 + -4x + x2 = 3.8888888889

Factor a perfect square on the left side:
(x + -2)(x + -2) = 3.8888888889

Calculate the square root of the right side: 1.972026594

Break this problem into two subproblems by setting 
(x + -2) equal to 1.972026594 and -1.972026594.

Subproblem 1

x + -2 = 1.972026594 Simplifying x + -2 = 1.972026594 Reorder the terms: -2 + x = 1.972026594 Solving -2 + x = 1.972026594 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 = 1.972026594 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.972026594 + 2 x = 1.972026594 + 2 Combine like terms: 1.972026594 + 2 = 3.972026594 x = 3.972026594 Simplifying x = 3.972026594

Subproblem 2

x + -2 = -1.972026594 Simplifying x + -2 = -1.972026594 Reorder the terms: -2 + x = -1.972026594 Solving -2 + x = -1.972026594 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 = -1.972026594 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.972026594 + 2 x = -1.972026594 + 2 Combine like terms: -1.972026594 + 2 = 0.027973406 x = 0.027973406 Simplifying x = 0.027973406

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.972026594, 0.027973406}

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