(x-10)*(x-4)=x+2*x+2

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Solution for (x-10)*(x-4)=x+2*x+2 equation:


Simplifying
(x + -10)(x + -4) = x + 2x + 2

Reorder the terms:
(-10 + x)(x + -4) = x + 2x + 2

Reorder the terms:
(-10 + x)(-4 + x) = x + 2x + 2

Multiply (-10 + x) * (-4 + x)
(-10(-4 + x) + x(-4 + x)) = x + 2x + 2
((-4 * -10 + x * -10) + x(-4 + x)) = x + 2x + 2
((40 + -10x) + x(-4 + x)) = x + 2x + 2
(40 + -10x + (-4 * x + x * x)) = x + 2x + 2
(40 + -10x + (-4x + x2)) = x + 2x + 2

Combine like terms: -10x + -4x = -14x
(40 + -14x + x2) = x + 2x + 2

Reorder the terms:
40 + -14x + x2 = 2 + x + 2x

Combine like terms: x + 2x = 3x
40 + -14x + x2 = 2 + 3x

Solving
40 + -14x + x2 = 2 + 3x

Solving for variable 'x'.

Reorder the terms:
40 + -2 + -14x + -3x + x2 = 2 + 3x + -2 + -3x

Combine like terms: 40 + -2 = 38
38 + -14x + -3x + x2 = 2 + 3x + -2 + -3x

Combine like terms: -14x + -3x = -17x
38 + -17x + x2 = 2 + 3x + -2 + -3x

Reorder the terms:
38 + -17x + x2 = 2 + -2 + 3x + -3x

Combine like terms: 2 + -2 = 0
38 + -17x + x2 = 0 + 3x + -3x
38 + -17x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
38 + -17x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-38' to each side of the equation.
38 + -17x + -38 + x2 = 0 + -38

Reorder the terms:
38 + -38 + -17x + x2 = 0 + -38

Combine like terms: 38 + -38 = 0
0 + -17x + x2 = 0 + -38
-17x + x2 = 0 + -38

Combine like terms: 0 + -38 = -38
-17x + x2 = -38

The x term is -17x.  Take half its coefficient (-8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
-17x + 72.25 + x2 = -38 + 72.25

Reorder the terms:
72.25 + -17x + x2 = -38 + 72.25

Combine like terms: -38 + 72.25 = 34.25
72.25 + -17x + x2 = 34.25

Factor a perfect square on the left side:
(x + -8.5)(x + -8.5) = 34.25

Calculate the square root of the right side: 5.852349955

Break this problem into two subproblems by setting 
(x + -8.5) equal to 5.852349955 and -5.852349955.

Subproblem 1

x + -8.5 = 5.852349955 Simplifying x + -8.5 = 5.852349955 Reorder the terms: -8.5 + x = 5.852349955 Solving -8.5 + x = 5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = 5.852349955 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = 5.852349955 + 8.5 x = 5.852349955 + 8.5 Combine like terms: 5.852349955 + 8.5 = 14.352349955 x = 14.352349955 Simplifying x = 14.352349955

Subproblem 2

x + -8.5 = -5.852349955 Simplifying x + -8.5 = -5.852349955 Reorder the terms: -8.5 + x = -5.852349955 Solving -8.5 + x = -5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = -5.852349955 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = -5.852349955 + 8.5 x = -5.852349955 + 8.5 Combine like terms: -5.852349955 + 8.5 = 2.647650045 x = 2.647650045 Simplifying x = 2.647650045

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.352349955, 2.647650045}

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