2x(3-x)-4(x+2)=3x(2x-3x)+5+7x*-12

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Solution for 2x(3-x)-4(x+2)=3x(2x-3x)+5+7x*-12 equation:


Simplifying
2x(3 + -1x) + -4(x + 2) = 3x(2x + -3x) + 5 + 7x * -12
(3 * 2x + -1x * 2x) + -4(x + 2) = 3x(2x + -3x) + 5 + 7x * -12
(6x + -2x2) + -4(x + 2) = 3x(2x + -3x) + 5 + 7x * -12

Reorder the terms:
6x + -2x2 + -4(2 + x) = 3x(2x + -3x) + 5 + 7x * -12
6x + -2x2 + (2 * -4 + x * -4) = 3x(2x + -3x) + 5 + 7x * -12
6x + -2x2 + (-8 + -4x) = 3x(2x + -3x) + 5 + 7x * -12

Reorder the terms:
-8 + 6x + -4x + -2x2 = 3x(2x + -3x) + 5 + 7x * -12

Combine like terms: 6x + -4x = 2x
-8 + 2x + -2x2 = 3x(2x + -3x) + 5 + 7x * -12

Combine like terms: 2x + -3x = -1x
-8 + 2x + -2x2 = 3x(-1x) + 5 + 7x * -12

Remove parenthesis around (-1x)
-8 + 2x + -2x2 = 3x * -1x + 5 + 7x * -12

Reorder the terms for easier multiplication:
-8 + 2x + -2x2 = 3 * -1x * x + 5 + 7x * -12

Multiply 3 * -1
-8 + 2x + -2x2 = -3x * x + 5 + 7x * -12

Multiply x * x
-8 + 2x + -2x2 = -3x2 + 5 + 7x * -12

Reorder the terms for easier multiplication:
-8 + 2x + -2x2 = -3x2 + 5 + 7 * -12x

Multiply 7 * -12
-8 + 2x + -2x2 = -3x2 + 5 + -84x

Reorder the terms:
-8 + 2x + -2x2 = 5 + -84x + -3x2

Solving
-8 + 2x + -2x2 = 5 + -84x + -3x2

Solving for variable 'x'.

Reorder the terms:
-8 + -5 + 2x + 84x + -2x2 + 3x2 = 5 + -84x + -3x2 + -5 + 84x + 3x2

Combine like terms: -8 + -5 = -13
-13 + 2x + 84x + -2x2 + 3x2 = 5 + -84x + -3x2 + -5 + 84x + 3x2

Combine like terms: 2x + 84x = 86x
-13 + 86x + -2x2 + 3x2 = 5 + -84x + -3x2 + -5 + 84x + 3x2

Combine like terms: -2x2 + 3x2 = 1x2
-13 + 86x + 1x2 = 5 + -84x + -3x2 + -5 + 84x + 3x2

Reorder the terms:
-13 + 86x + 1x2 = 5 + -5 + -84x + 84x + -3x2 + 3x2

Combine like terms: 5 + -5 = 0
-13 + 86x + 1x2 = 0 + -84x + 84x + -3x2 + 3x2
-13 + 86x + 1x2 = -84x + 84x + -3x2 + 3x2

Combine like terms: -84x + 84x = 0
-13 + 86x + 1x2 = 0 + -3x2 + 3x2
-13 + 86x + 1x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
-13 + 86x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '13' to each side of the equation.
-13 + 86x + 13 + x2 = 0 + 13

Reorder the terms:
-13 + 13 + 86x + x2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + 86x + x2 = 0 + 13
86x + x2 = 0 + 13

Combine like terms: 0 + 13 = 13
86x + x2 = 13

The x term is 86x.  Take half its coefficient (43).
Square it (1849) and add it to both sides.

Add '1849' to each side of the equation.
86x + 1849 + x2 = 13 + 1849

Reorder the terms:
1849 + 86x + x2 = 13 + 1849

Combine like terms: 13 + 1849 = 1862
1849 + 86x + x2 = 1862

Factor a perfect square on the left side:
(x + 43)(x + 43) = 1862

Calculate the square root of the right side: 43.150898021

Break this problem into two subproblems by setting 
(x + 43) equal to 43.150898021 and -43.150898021.

Subproblem 1

x + 43 = 43.150898021 Simplifying x + 43 = 43.150898021 Reorder the terms: 43 + x = 43.150898021 Solving 43 + x = 43.150898021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-43' to each side of the equation. 43 + -43 + x = 43.150898021 + -43 Combine like terms: 43 + -43 = 0 0 + x = 43.150898021 + -43 x = 43.150898021 + -43 Combine like terms: 43.150898021 + -43 = 0.150898021 x = 0.150898021 Simplifying x = 0.150898021

Subproblem 2

x + 43 = -43.150898021 Simplifying x + 43 = -43.150898021 Reorder the terms: 43 + x = -43.150898021 Solving 43 + x = -43.150898021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-43' to each side of the equation. 43 + -43 + x = -43.150898021 + -43 Combine like terms: 43 + -43 = 0 0 + x = -43.150898021 + -43 x = -43.150898021 + -43 Combine like terms: -43.150898021 + -43 = -86.150898021 x = -86.150898021 Simplifying x = -86.150898021

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.150898021, -86.150898021}

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