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

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


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

Reorder the terms:
-2x(3 + -2x) + 2 = 3x + 50
(3 * -2x + -2x * -2x) + 2 = 3x + 50
(-6x + 4x2) + 2 = 3x + 50

Reorder the terms:
2 + -6x + 4x2 = 3x + 50

Reorder the terms:
2 + -6x + 4x2 = 50 + 3x

Solving
2 + -6x + 4x2 = 50 + 3x

Solving for variable 'x'.

Reorder the terms:
2 + -50 + -6x + -3x + 4x2 = 50 + 3x + -50 + -3x

Combine like terms: 2 + -50 = -48
-48 + -6x + -3x + 4x2 = 50 + 3x + -50 + -3x

Combine like terms: -6x + -3x = -9x
-48 + -9x + 4x2 = 50 + 3x + -50 + -3x

Reorder the terms:
-48 + -9x + 4x2 = 50 + -50 + 3x + -3x

Combine like terms: 50 + -50 = 0
-48 + -9x + 4x2 = 0 + 3x + -3x
-48 + -9x + 4x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-48 + -9x + 4x2 = 0

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

Divide each side by '4'.
-12 + -2.25x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -2.25x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + -2.25x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -2.25x + x2 = 0 + 12
-2.25x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
-2.25x + x2 = 12

The x term is -2.25x.  Take half its coefficient (-1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
-2.25x + 1.265625 + x2 = 12 + 1.265625

Reorder the terms:
1.265625 + -2.25x + x2 = 12 + 1.265625

Combine like terms: 12 + 1.265625 = 13.265625
1.265625 + -2.25x + x2 = 13.265625

Factor a perfect square on the left side:
(x + -1.125)(x + -1.125) = 13.265625

Calculate the square root of the right side: 3.642200571

Break this problem into two subproblems by setting 
(x + -1.125) equal to 3.642200571 and -3.642200571.

Subproblem 1

x + -1.125 = 3.642200571 Simplifying x + -1.125 = 3.642200571 Reorder the terms: -1.125 + x = 3.642200571 Solving -1.125 + x = 3.642200571 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + x = 3.642200571 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + x = 3.642200571 + 1.125 x = 3.642200571 + 1.125 Combine like terms: 3.642200571 + 1.125 = 4.767200571 x = 4.767200571 Simplifying x = 4.767200571

Subproblem 2

x + -1.125 = -3.642200571 Simplifying x + -1.125 = -3.642200571 Reorder the terms: -1.125 + x = -3.642200571 Solving -1.125 + x = -3.642200571 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + x = -3.642200571 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + x = -3.642200571 + 1.125 x = -3.642200571 + 1.125 Combine like terms: -3.642200571 + 1.125 = -2.517200571 x = -2.517200571 Simplifying x = -2.517200571

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.767200571, -2.517200571}

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