36x^2-43x+9=0

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Solution for 36x^2-43x+9=0 equation:


Simplifying
36x2 + -43x + 9 = 0

Reorder the terms:
9 + -43x + 36x2 = 0

Solving
9 + -43x + 36x2 = 0

Solving for variable 'x'.

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

Divide each side by '36'.
0.25 + -1.194444444x + x2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + -1.194444444x + -0.25 + x2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + -1.194444444x + x2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -1.194444444x + x2 = 0 + -0.25
-1.194444444x + x2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
-1.194444444x + x2 = -0.25

The x term is -1.194444444x.  Take half its coefficient (-0.597222222).
Square it (0.3566743825) and add it to both sides.

Add '0.3566743825' to each side of the equation.
-1.194444444x + 0.3566743825 + x2 = -0.25 + 0.3566743825

Reorder the terms:
0.3566743825 + -1.194444444x + x2 = -0.25 + 0.3566743825

Combine like terms: -0.25 + 0.3566743825 = 0.1066743825
0.3566743825 + -1.194444444x + x2 = 0.1066743825

Factor a perfect square on the left side:
(x + -0.597222222)(x + -0.597222222) = 0.1066743825

Calculate the square root of the right side: 0.326610445

Break this problem into two subproblems by setting 
(x + -0.597222222) equal to 0.326610445 and -0.326610445.

Subproblem 1

x + -0.597222222 = 0.326610445 Simplifying x + -0.597222222 = 0.326610445 Reorder the terms: -0.597222222 + x = 0.326610445 Solving -0.597222222 + x = 0.326610445 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.597222222' to each side of the equation. -0.597222222 + 0.597222222 + x = 0.326610445 + 0.597222222 Combine like terms: -0.597222222 + 0.597222222 = 0.000000000 0.000000000 + x = 0.326610445 + 0.597222222 x = 0.326610445 + 0.597222222 Combine like terms: 0.326610445 + 0.597222222 = 0.923832667 x = 0.923832667 Simplifying x = 0.923832667

Subproblem 2

x + -0.597222222 = -0.326610445 Simplifying x + -0.597222222 = -0.326610445 Reorder the terms: -0.597222222 + x = -0.326610445 Solving -0.597222222 + x = -0.326610445 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.597222222' to each side of the equation. -0.597222222 + 0.597222222 + x = -0.326610445 + 0.597222222 Combine like terms: -0.597222222 + 0.597222222 = 0.000000000 0.000000000 + x = -0.326610445 + 0.597222222 x = -0.326610445 + 0.597222222 Combine like terms: -0.326610445 + 0.597222222 = 0.270611777 x = 0.270611777 Simplifying x = 0.270611777

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.923832667, 0.270611777}

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