9x^2-33x+25=0

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Solution for 9x^2-33x+25=0 equation:


Simplifying
9x2 + -33x + 25 = 0

Reorder the terms:
25 + -33x + 9x2 = 0

Solving
25 + -33x + 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'.
2.777777778 + -3.666666667x + x2 = 0

Move the constant term to the right:

Add '-2.777777778' to each side of the equation.
2.777777778 + -3.666666667x + -2.777777778 + x2 = 0 + -2.777777778

Reorder the terms:
2.777777778 + -2.777777778 + -3.666666667x + x2 = 0 + -2.777777778

Combine like terms: 2.777777778 + -2.777777778 = 0.000000000
0.000000000 + -3.666666667x + x2 = 0 + -2.777777778
-3.666666667x + x2 = 0 + -2.777777778

Combine like terms: 0 + -2.777777778 = -2.777777778
-3.666666667x + x2 = -2.777777778

The x term is -3.666666667x.  Take half its coefficient (-1.833333334).
Square it (3.361111114) and add it to both sides.

Add '3.361111114' to each side of the equation.
-3.666666667x + 3.361111114 + x2 = -2.777777778 + 3.361111114

Reorder the terms:
3.361111114 + -3.666666667x + x2 = -2.777777778 + 3.361111114

Combine like terms: -2.777777778 + 3.361111114 = 0.583333336
3.361111114 + -3.666666667x + x2 = 0.583333336

Factor a perfect square on the left side:
(x + -1.833333334)(x + -1.833333334) = 0.583333336

Calculate the square root of the right side: 0.763762618

Break this problem into two subproblems by setting 
(x + -1.833333334) equal to 0.763762618 and -0.763762618.

Subproblem 1

x + -1.833333334 = 0.763762618 Simplifying x + -1.833333334 = 0.763762618 Reorder the terms: -1.833333334 + x = 0.763762618 Solving -1.833333334 + x = 0.763762618 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = 0.763762618 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = 0.763762618 + 1.833333334 x = 0.763762618 + 1.833333334 Combine like terms: 0.763762618 + 1.833333334 = 2.597095952 x = 2.597095952 Simplifying x = 2.597095952

Subproblem 2

x + -1.833333334 = -0.763762618 Simplifying x + -1.833333334 = -0.763762618 Reorder the terms: -1.833333334 + x = -0.763762618 Solving -1.833333334 + x = -0.763762618 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = -0.763762618 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = -0.763762618 + 1.833333334 x = -0.763762618 + 1.833333334 Combine like terms: -0.763762618 + 1.833333334 = 1.069570716 x = 1.069570716 Simplifying x = 1.069570716

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.597095952, 1.069570716}

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