x(x-2)-3(2x-5)=2

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Solution for x(x-2)-3(2x-5)=2 equation:


Simplifying
x(x + -2) + -3(2x + -5) = 2

Reorder the terms:
x(-2 + x) + -3(2x + -5) = 2
(-2 * x + x * x) + -3(2x + -5) = 2
(-2x + x2) + -3(2x + -5) = 2

Reorder the terms:
-2x + x2 + -3(-5 + 2x) = 2
-2x + x2 + (-5 * -3 + 2x * -3) = 2
-2x + x2 + (15 + -6x) = 2

Reorder the terms:
15 + -2x + -6x + x2 = 2

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

Solving
15 + -8x + x2 = 2

Solving for variable 'x'.

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

Combine like terms: 15 + -2 = 13
13 + -8x + x2 = 2 + -2

Combine like terms: 2 + -2 = 0
13 + -8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + -8x + -13 + x2 = 0 + -13

Reorder the terms:
13 + -13 + -8x + x2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + -8x + x2 = 0 + -13
-8x + x2 = 0 + -13

Combine like terms: 0 + -13 = -13
-8x + x2 = -13

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = -13 + 16

Reorder the terms:
16 + -8x + x2 = -13 + 16

Combine like terms: -13 + 16 = 3
16 + -8x + x2 = 3

Factor a perfect square on the left side:
(x + -4)(x + -4) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + -4) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + -4 = 1.732050808 Simplifying x + -4 = 1.732050808 Reorder the terms: -4 + x = 1.732050808 Solving -4 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 1.732050808 + 4 Combine like terms: -4 + 4 = 0 0 + x = 1.732050808 + 4 x = 1.732050808 + 4 Combine like terms: 1.732050808 + 4 = 5.732050808 x = 5.732050808 Simplifying x = 5.732050808

Subproblem 2

x + -4 = -1.732050808 Simplifying x + -4 = -1.732050808 Reorder the terms: -4 + x = -1.732050808 Solving -4 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -1.732050808 + 4 Combine like terms: -4 + 4 = 0 0 + x = -1.732050808 + 4 x = -1.732050808 + 4 Combine like terms: -1.732050808 + 4 = 2.267949192 x = 2.267949192 Simplifying x = 2.267949192

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.732050808, 2.267949192}

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