9x(-6x+5)=9x-11

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Solution for 9x(-6x+5)=9x-11 equation:


Simplifying
9x(-6x + 5) = 9x + -11

Reorder the terms:
9x(5 + -6x) = 9x + -11
(5 * 9x + -6x * 9x) = 9x + -11
(45x + -54x2) = 9x + -11

Reorder the terms:
45x + -54x2 = -11 + 9x

Solving
45x + -54x2 = -11 + 9x

Solving for variable 'x'.

Reorder the terms:
11 + 45x + -9x + -54x2 = -11 + 9x + 11 + -9x

Combine like terms: 45x + -9x = 36x
11 + 36x + -54x2 = -11 + 9x + 11 + -9x

Reorder the terms:
11 + 36x + -54x2 = -11 + 11 + 9x + -9x

Combine like terms: -11 + 11 = 0
11 + 36x + -54x2 = 0 + 9x + -9x
11 + 36x + -54x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
11 + 36x + -54x2 = 0

Begin completing the square.  Divide all terms by
-54 the coefficient of the squared term: 

Divide each side by '-54'.
-0.2037037037 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '0.2037037037' to each side of the equation.
-0.2037037037 + -0.6666666667x + 0.2037037037 + x2 = 0 + 0.2037037037

Reorder the terms:
-0.2037037037 + 0.2037037037 + -0.6666666667x + x2 = 0 + 0.2037037037

Combine like terms: -0.2037037037 + 0.2037037037 = 0.0000000000
0.0000000000 + -0.6666666667x + x2 = 0 + 0.2037037037
-0.6666666667x + x2 = 0 + 0.2037037037

Combine like terms: 0 + 0.2037037037 = 0.2037037037
-0.6666666667x + x2 = 0.2037037037

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 = 0.2037037037 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = 0.2037037037 + 0.1111111112

Combine like terms: 0.2037037037 + 0.1111111112 = 0.3148148149
0.1111111112 + -0.6666666667x + x2 = 0.3148148149

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = 0.3148148149

Calculate the square root of the right side: 0.561083608

Break this problem into two subproblems by setting 
(x + -0.3333333334) equal to 0.561083608 and -0.561083608.

Subproblem 1

x + -0.3333333334 = 0.561083608 Simplifying x + -0.3333333334 = 0.561083608 Reorder the terms: -0.3333333334 + x = 0.561083608 Solving -0.3333333334 + x = 0.561083608 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 = 0.561083608 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 0.561083608 + 0.3333333334 x = 0.561083608 + 0.3333333334 Combine like terms: 0.561083608 + 0.3333333334 = 0.8944169414 x = 0.8944169414 Simplifying x = 0.8944169414

Subproblem 2

x + -0.3333333334 = -0.561083608 Simplifying x + -0.3333333334 = -0.561083608 Reorder the terms: -0.3333333334 + x = -0.561083608 Solving -0.3333333334 + x = -0.561083608 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 = -0.561083608 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -0.561083608 + 0.3333333334 x = -0.561083608 + 0.3333333334 Combine like terms: -0.561083608 + 0.3333333334 = -0.2277502746 x = -0.2277502746 Simplifying x = -0.2277502746

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8944169414, -0.2277502746}

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