6(x-9)x=7(x-8)+2

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Solution for 6(x-9)x=7(x-8)+2 equation:


Simplifying
6(x + -9) * x = 7(x + -8) + 2

Reorder the terms:
6(-9 + x) * x = 7(x + -8) + 2

Reorder the terms for easier multiplication:
6x(-9 + x) = 7(x + -8) + 2
(-9 * 6x + x * 6x) = 7(x + -8) + 2
(-54x + 6x2) = 7(x + -8) + 2

Reorder the terms:
-54x + 6x2 = 7(-8 + x) + 2
-54x + 6x2 = (-8 * 7 + x * 7) + 2
-54x + 6x2 = (-56 + 7x) + 2

Reorder the terms:
-54x + 6x2 = -56 + 2 + 7x

Combine like terms: -56 + 2 = -54
-54x + 6x2 = -54 + 7x

Solving
-54x + 6x2 = -54 + 7x

Solving for variable 'x'.

Reorder the terms:
54 + -54x + -7x + 6x2 = -54 + 7x + 54 + -7x

Combine like terms: -54x + -7x = -61x
54 + -61x + 6x2 = -54 + 7x + 54 + -7x

Reorder the terms:
54 + -61x + 6x2 = -54 + 54 + 7x + -7x

Combine like terms: -54 + 54 = 0
54 + -61x + 6x2 = 0 + 7x + -7x
54 + -61x + 6x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
54 + -61x + 6x2 = 0

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

Divide each side by '6'.
9 + -10.16666667x + x2 = 0

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + -10.16666667x + -9 + x2 = 0 + -9

Reorder the terms:
9 + -9 + -10.16666667x + x2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -10.16666667x + x2 = 0 + -9
-10.16666667x + x2 = 0 + -9

Combine like terms: 0 + -9 = -9
-10.16666667x + x2 = -9

The x term is -10.16666667x.  Take half its coefficient (-5.083333335).
Square it (25.84027779) and add it to both sides.

Add '25.84027779' to each side of the equation.
-10.16666667x + 25.84027779 + x2 = -9 + 25.84027779

Reorder the terms:
25.84027779 + -10.16666667x + x2 = -9 + 25.84027779

Combine like terms: -9 + 25.84027779 = 16.84027779
25.84027779 + -10.16666667x + x2 = 16.84027779

Factor a perfect square on the left side:
(x + -5.083333335)(x + -5.083333335) = 16.84027779

Calculate the square root of the right side: 4.103690752

Break this problem into two subproblems by setting 
(x + -5.083333335) equal to 4.103690752 and -4.103690752.

Subproblem 1

x + -5.083333335 = 4.103690752 Simplifying x + -5.083333335 = 4.103690752 Reorder the terms: -5.083333335 + x = 4.103690752 Solving -5.083333335 + x = 4.103690752 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.083333335' to each side of the equation. -5.083333335 + 5.083333335 + x = 4.103690752 + 5.083333335 Combine like terms: -5.083333335 + 5.083333335 = 0.000000000 0.000000000 + x = 4.103690752 + 5.083333335 x = 4.103690752 + 5.083333335 Combine like terms: 4.103690752 + 5.083333335 = 9.187024087 x = 9.187024087 Simplifying x = 9.187024087

Subproblem 2

x + -5.083333335 = -4.103690752 Simplifying x + -5.083333335 = -4.103690752 Reorder the terms: -5.083333335 + x = -4.103690752 Solving -5.083333335 + x = -4.103690752 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.083333335' to each side of the equation. -5.083333335 + 5.083333335 + x = -4.103690752 + 5.083333335 Combine like terms: -5.083333335 + 5.083333335 = 0.000000000 0.000000000 + x = -4.103690752 + 5.083333335 x = -4.103690752 + 5.083333335 Combine like terms: -4.103690752 + 5.083333335 = 0.979642583 x = 0.979642583 Simplifying x = 0.979642583

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.187024087, 0.979642583}

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