9x^2-6x+4=36

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Solution for 9x^2-6x+4=36 equation:


Simplifying
9x2 + -6x + 4 = 36

Reorder the terms:
4 + -6x + 9x2 = 36

Solving
4 + -6x + 9x2 = 36

Solving for variable 'x'.

Reorder the terms:
4 + -36 + -6x + 9x2 = 36 + -36

Combine like terms: 4 + -36 = -32
-32 + -6x + 9x2 = 36 + -36

Combine like terms: 36 + -36 = 0
-32 + -6x + 9x2 = 0

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

Divide each side by '9'.
-3.555555556 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '3.555555556' to each side of the equation.
-3.555555556 + -0.6666666667x + 3.555555556 + x2 = 0 + 3.555555556

Reorder the terms:
-3.555555556 + 3.555555556 + -0.6666666667x + x2 = 0 + 3.555555556

Combine like terms: -3.555555556 + 3.555555556 = 0.000000000
0.000000000 + -0.6666666667x + x2 = 0 + 3.555555556
-0.6666666667x + x2 = 0 + 3.555555556

Combine like terms: 0 + 3.555555556 = 3.555555556
-0.6666666667x + x2 = 3.555555556

The x term is -0.6666666667x.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = 3.555555556 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = 3.555555556 + 0.1111111112

Combine like terms: 3.555555556 + 0.1111111112 = 3.6666666672
0.1111111112 + -0.6666666667x + x2 = 3.6666666672

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = 3.6666666672

Calculate the square root of the right side: 1.914854216

Break this problem into two subproblems by setting 
(x + -0.3333333334) equal to 1.914854216 and -1.914854216.

Subproblem 1

x + -0.3333333334 = 1.914854216 Simplifying x + -0.3333333334 = 1.914854216 Reorder the terms: -0.3333333334 + x = 1.914854216 Solving -0.3333333334 + x = 1.914854216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = 1.914854216 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 1.914854216 + 0.3333333334 x = 1.914854216 + 0.3333333334 Combine like terms: 1.914854216 + 0.3333333334 = 2.2481875494 x = 2.2481875494 Simplifying x = 2.2481875494

Subproblem 2

x + -0.3333333334 = -1.914854216 Simplifying x + -0.3333333334 = -1.914854216 Reorder the terms: -0.3333333334 + x = -1.914854216 Solving -0.3333333334 + x = -1.914854216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = -1.914854216 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -1.914854216 + 0.3333333334 x = -1.914854216 + 0.3333333334 Combine like terms: -1.914854216 + 0.3333333334 = -1.5815208826 x = -1.5815208826 Simplifying x = -1.5815208826

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.2481875494, -1.5815208826}

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