6x(x-9)-5=

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


Simplifying
6x(x + -9) + -5 = 0

Reorder the terms:
6x(-9 + x) + -5 = 0
(-9 * 6x + x * 6x) + -5 = 0
(-54x + 6x2) + -5 = 0

Reorder the terms:
-5 + -54x + 6x2 = 0

Solving
-5 + -54x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
-0.8333333333 + -9x + x2 = 0

Move the constant term to the right:

Add '0.8333333333' to each side of the equation.
-0.8333333333 + -9x + 0.8333333333 + x2 = 0 + 0.8333333333

Reorder the terms:
-0.8333333333 + 0.8333333333 + -9x + x2 = 0 + 0.8333333333

Combine like terms: -0.8333333333 + 0.8333333333 = 0.0000000000
0.0000000000 + -9x + x2 = 0 + 0.8333333333
-9x + x2 = 0 + 0.8333333333

Combine like terms: 0 + 0.8333333333 = 0.8333333333
-9x + x2 = 0.8333333333

The x term is -9x.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9x + 20.25 + x2 = 0.8333333333 + 20.25

Reorder the terms:
20.25 + -9x + x2 = 0.8333333333 + 20.25

Combine like terms: 0.8333333333 + 20.25 = 21.0833333333
20.25 + -9x + x2 = 21.0833333333

Factor a perfect square on the left side:
(x + -4.5)(x + -4.5) = 21.0833333333

Calculate the square root of the right side: 4.591659105

Break this problem into two subproblems by setting 
(x + -4.5) equal to 4.591659105 and -4.591659105.

Subproblem 1

x + -4.5 = 4.591659105 Simplifying x + -4.5 = 4.591659105 Reorder the terms: -4.5 + x = 4.591659105 Solving -4.5 + x = 4.591659105 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + x = 4.591659105 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = 4.591659105 + 4.5 x = 4.591659105 + 4.5 Combine like terms: 4.591659105 + 4.5 = 9.091659105 x = 9.091659105 Simplifying x = 9.091659105

Subproblem 2

x + -4.5 = -4.591659105 Simplifying x + -4.5 = -4.591659105 Reorder the terms: -4.5 + x = -4.591659105 Solving -4.5 + x = -4.591659105 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + x = -4.591659105 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = -4.591659105 + 4.5 x = -4.591659105 + 4.5 Combine like terms: -4.591659105 + 4.5 = -0.091659105 x = -0.091659105 Simplifying x = -0.091659105

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.091659105, -0.091659105}

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