7x(2x)+(3x-2)=6x+50

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Solution for 7x(2x)+(3x-2)=6x+50 equation:


Simplifying
7x(2x) + (3x + -2) = 6x + 50

Remove parenthesis around (2x)
7x * 2x + (3x + -2) = 6x + 50

Reorder the terms for easier multiplication:
7 * 2x * x + (3x + -2) = 6x + 50

Multiply 7 * 2
14x * x + (3x + -2) = 6x + 50

Multiply x * x
14x2 + (3x + -2) = 6x + 50

Reorder the terms:
14x2 + (-2 + 3x) = 6x + 50

Remove parenthesis around (-2 + 3x)
14x2 + -2 + 3x = 6x + 50

Reorder the terms:
-2 + 3x + 14x2 = 6x + 50

Reorder the terms:
-2 + 3x + 14x2 = 50 + 6x

Solving
-2 + 3x + 14x2 = 50 + 6x

Solving for variable 'x'.

Reorder the terms:
-2 + -50 + 3x + -6x + 14x2 = 50 + 6x + -50 + -6x

Combine like terms: -2 + -50 = -52
-52 + 3x + -6x + 14x2 = 50 + 6x + -50 + -6x

Combine like terms: 3x + -6x = -3x
-52 + -3x + 14x2 = 50 + 6x + -50 + -6x

Reorder the terms:
-52 + -3x + 14x2 = 50 + -50 + 6x + -6x

Combine like terms: 50 + -50 = 0
-52 + -3x + 14x2 = 0 + 6x + -6x
-52 + -3x + 14x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
-52 + -3x + 14x2 = 0

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

Divide each side by '14'.
-3.714285714 + -0.2142857143x + x2 = 0

Move the constant term to the right:

Add '3.714285714' to each side of the equation.
-3.714285714 + -0.2142857143x + 3.714285714 + x2 = 0 + 3.714285714

Reorder the terms:
-3.714285714 + 3.714285714 + -0.2142857143x + x2 = 0 + 3.714285714

Combine like terms: -3.714285714 + 3.714285714 = 0.000000000
0.000000000 + -0.2142857143x + x2 = 0 + 3.714285714
-0.2142857143x + x2 = 0 + 3.714285714

Combine like terms: 0 + 3.714285714 = 3.714285714
-0.2142857143x + x2 = 3.714285714

The x term is -0.2142857143x.  Take half its coefficient (-0.1071428572).
Square it (0.01147959185) and add it to both sides.

Add '0.01147959185' to each side of the equation.
-0.2142857143x + 0.01147959185 + x2 = 3.714285714 + 0.01147959185

Reorder the terms:
0.01147959185 + -0.2142857143x + x2 = 3.714285714 + 0.01147959185

Combine like terms: 3.714285714 + 0.01147959185 = 3.72576530585
0.01147959185 + -0.2142857143x + x2 = 3.72576530585

Factor a perfect square on the left side:
(x + -0.1071428572)(x + -0.1071428572) = 3.72576530585

Calculate the square root of the right side: 1.930224159

Break this problem into two subproblems by setting 
(x + -0.1071428572) equal to 1.930224159 and -1.930224159.

Subproblem 1

x + -0.1071428572 = 1.930224159 Simplifying x + -0.1071428572 = 1.930224159 Reorder the terms: -0.1071428572 + x = 1.930224159 Solving -0.1071428572 + x = 1.930224159 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1071428572' to each side of the equation. -0.1071428572 + 0.1071428572 + x = 1.930224159 + 0.1071428572 Combine like terms: -0.1071428572 + 0.1071428572 = 0.0000000000 0.0000000000 + x = 1.930224159 + 0.1071428572 x = 1.930224159 + 0.1071428572 Combine like terms: 1.930224159 + 0.1071428572 = 2.0373670162 x = 2.0373670162 Simplifying x = 2.0373670162

Subproblem 2

x + -0.1071428572 = -1.930224159 Simplifying x + -0.1071428572 = -1.930224159 Reorder the terms: -0.1071428572 + x = -1.930224159 Solving -0.1071428572 + x = -1.930224159 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1071428572' to each side of the equation. -0.1071428572 + 0.1071428572 + x = -1.930224159 + 0.1071428572 Combine like terms: -0.1071428572 + 0.1071428572 = 0.0000000000 0.0000000000 + x = -1.930224159 + 0.1071428572 x = -1.930224159 + 0.1071428572 Combine like terms: -1.930224159 + 0.1071428572 = -1.8230813018 x = -1.8230813018 Simplifying x = -1.8230813018

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.0373670162, -1.8230813018}

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