9x^2-54x+8=0

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Solution for 9x^2-54x+8=0 equation:


Simplifying
9x2 + -54x + 8 = 0

Reorder the terms:
8 + -54x + 9x2 = 0

Solving
8 + -54x + 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'.
0.8888888889 + -6x + x2 = 0

Move the constant term to the right:

Add '-0.8888888889' to each side of the equation.
0.8888888889 + -6x + -0.8888888889 + x2 = 0 + -0.8888888889

Reorder the terms:
0.8888888889 + -0.8888888889 + -6x + x2 = 0 + -0.8888888889

Combine like terms: 0.8888888889 + -0.8888888889 = 0.0000000000
0.0000000000 + -6x + x2 = 0 + -0.8888888889
-6x + x2 = 0 + -0.8888888889

Combine like terms: 0 + -0.8888888889 = -0.8888888889
-6x + x2 = -0.8888888889

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -0.8888888889 + 9

Reorder the terms:
9 + -6x + x2 = -0.8888888889 + 9

Combine like terms: -0.8888888889 + 9 = 8.1111111111
9 + -6x + x2 = 8.1111111111

Factor a perfect square on the left side:
(x + -3)(x + -3) = 8.1111111111

Calculate the square root of the right side: 2.848001248

Break this problem into two subproblems by setting 
(x + -3) equal to 2.848001248 and -2.848001248.

Subproblem 1

x + -3 = 2.848001248 Simplifying x + -3 = 2.848001248 Reorder the terms: -3 + x = 2.848001248 Solving -3 + x = 2.848001248 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 2.848001248 + 3 Combine like terms: -3 + 3 = 0 0 + x = 2.848001248 + 3 x = 2.848001248 + 3 Combine like terms: 2.848001248 + 3 = 5.848001248 x = 5.848001248 Simplifying x = 5.848001248

Subproblem 2

x + -3 = -2.848001248 Simplifying x + -3 = -2.848001248 Reorder the terms: -3 + x = -2.848001248 Solving -3 + x = -2.848001248 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -2.848001248 + 3 Combine like terms: -3 + 3 = 0 0 + x = -2.848001248 + 3 x = -2.848001248 + 3 Combine like terms: -2.848001248 + 3 = 0.151998752 x = 0.151998752 Simplifying x = 0.151998752

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.848001248, 0.151998752}

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