0=-6x^2+17x-9

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Solution for 0=-6x^2+17x-9 equation:


Simplifying
0 = -6x2 + 17x + -9

Reorder the terms:
0 = -9 + 17x + -6x2

Solving
0 = -9 + 17x + -6x2

Solving for variable 'x'.

Combine like terms: 0 + 9 = 9
9 + -17x + 6x2 = -9 + 17x + -6x2 + 9 + -17x + 6x2

Reorder the terms:
9 + -17x + 6x2 = -9 + 9 + 17x + -17x + -6x2 + 6x2

Combine like terms: -9 + 9 = 0
9 + -17x + 6x2 = 0 + 17x + -17x + -6x2 + 6x2
9 + -17x + 6x2 = 17x + -17x + -6x2 + 6x2

Combine like terms: 17x + -17x = 0
9 + -17x + 6x2 = 0 + -6x2 + 6x2
9 + -17x + 6x2 = -6x2 + 6x2

Combine like terms: -6x2 + 6x2 = 0
9 + -17x + 6x2 = 0

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

Divide each side by '6'.
1.5 + -2.833333333x + x2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -2.833333333x + -1.5 + x2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -2.833333333x + x2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -2.833333333x + x2 = 0 + -1.5
-2.833333333x + x2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-2.833333333x + x2 = -1.5

The x term is -2.833333333x.  Take half its coefficient (-1.416666667).
Square it (2.006944445) and add it to both sides.

Add '2.006944445' to each side of the equation.
-2.833333333x + 2.006944445 + x2 = -1.5 + 2.006944445

Reorder the terms:
2.006944445 + -2.833333333x + x2 = -1.5 + 2.006944445

Combine like terms: -1.5 + 2.006944445 = 0.506944445
2.006944445 + -2.833333333x + x2 = 0.506944445

Factor a perfect square on the left side:
(x + -1.416666667)(x + -1.416666667) = 0.506944445

Calculate the square root of the right side: 0.712000313

Break this problem into two subproblems by setting 
(x + -1.416666667) equal to 0.712000313 and -0.712000313.

Subproblem 1

x + -1.416666667 = 0.712000313 Simplifying x + -1.416666667 = 0.712000313 Reorder the terms: -1.416666667 + x = 0.712000313 Solving -1.416666667 + x = 0.712000313 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.416666667' to each side of the equation. -1.416666667 + 1.416666667 + x = 0.712000313 + 1.416666667 Combine like terms: -1.416666667 + 1.416666667 = 0.000000000 0.000000000 + x = 0.712000313 + 1.416666667 x = 0.712000313 + 1.416666667 Combine like terms: 0.712000313 + 1.416666667 = 2.12866698 x = 2.12866698 Simplifying x = 2.12866698

Subproblem 2

x + -1.416666667 = -0.712000313 Simplifying x + -1.416666667 = -0.712000313 Reorder the terms: -1.416666667 + x = -0.712000313 Solving -1.416666667 + x = -0.712000313 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.416666667' to each side of the equation. -1.416666667 + 1.416666667 + x = -0.712000313 + 1.416666667 Combine like terms: -1.416666667 + 1.416666667 = 0.000000000 0.000000000 + x = -0.712000313 + 1.416666667 x = -0.712000313 + 1.416666667 Combine like terms: -0.712000313 + 1.416666667 = 0.704666354 x = 0.704666354 Simplifying x = 0.704666354

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.12866698, 0.704666354}

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