6x-10=3x(x-5)-8

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Solution for 6x-10=3x(x-5)-8 equation:


Simplifying
6x + -10 = 3x(x + -5) + -8

Reorder the terms:
-10 + 6x = 3x(x + -5) + -8

Reorder the terms:
-10 + 6x = 3x(-5 + x) + -8
-10 + 6x = (-5 * 3x + x * 3x) + -8
-10 + 6x = (-15x + 3x2) + -8

Reorder the terms:
-10 + 6x = -8 + -15x + 3x2

Solving
-10 + 6x = -8 + -15x + 3x2

Solving for variable 'x'.

Reorder the terms:
-10 + 8 + 6x + 15x + -3x2 = -8 + -15x + 3x2 + 8 + 15x + -3x2

Combine like terms: -10 + 8 = -2
-2 + 6x + 15x + -3x2 = -8 + -15x + 3x2 + 8 + 15x + -3x2

Combine like terms: 6x + 15x = 21x
-2 + 21x + -3x2 = -8 + -15x + 3x2 + 8 + 15x + -3x2

Reorder the terms:
-2 + 21x + -3x2 = -8 + 8 + -15x + 15x + 3x2 + -3x2

Combine like terms: -8 + 8 = 0
-2 + 21x + -3x2 = 0 + -15x + 15x + 3x2 + -3x2
-2 + 21x + -3x2 = -15x + 15x + 3x2 + -3x2

Combine like terms: -15x + 15x = 0
-2 + 21x + -3x2 = 0 + 3x2 + -3x2
-2 + 21x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-2 + 21x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
0.6666666667 + -7x + x2 = 0

Move the constant term to the right:

Add '-0.6666666667' to each side of the equation.
0.6666666667 + -7x + -0.6666666667 + x2 = 0 + -0.6666666667

Reorder the terms:
0.6666666667 + -0.6666666667 + -7x + x2 = 0 + -0.6666666667

Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000
0.0000000000 + -7x + x2 = 0 + -0.6666666667
-7x + x2 = 0 + -0.6666666667

Combine like terms: 0 + -0.6666666667 = -0.6666666667
-7x + x2 = -0.6666666667

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = -0.6666666667 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -0.6666666667 + 12.25

Combine like terms: -0.6666666667 + 12.25 = 11.5833333333
12.25 + -7x + x2 = 11.5833333333

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 11.5833333333

Calculate the square root of the right side: 3.403429643

Break this problem into two subproblems by setting 
(x + -3.5) equal to 3.403429643 and -3.403429643.

Subproblem 1

x + -3.5 = 3.403429643 Simplifying x + -3.5 = 3.403429643 Reorder the terms: -3.5 + x = 3.403429643 Solving -3.5 + x = 3.403429643 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 3.403429643 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 3.403429643 + 3.5 x = 3.403429643 + 3.5 Combine like terms: 3.403429643 + 3.5 = 6.903429643 x = 6.903429643 Simplifying x = 6.903429643

Subproblem 2

x + -3.5 = -3.403429643 Simplifying x + -3.5 = -3.403429643 Reorder the terms: -3.5 + x = -3.403429643 Solving -3.5 + x = -3.403429643 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -3.403429643 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -3.403429643 + 3.5 x = -3.403429643 + 3.5 Combine like terms: -3.403429643 + 3.5 = 0.096570357 x = 0.096570357 Simplifying x = 0.096570357

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.903429643, 0.096570357}

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