4x(-2x+3)=8x-33

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Solution for 4x(-2x+3)=8x-33 equation:


Simplifying
4x(-2x + 3) = 8x + -33

Reorder the terms:
4x(3 + -2x) = 8x + -33
(3 * 4x + -2x * 4x) = 8x + -33
(12x + -8x2) = 8x + -33

Reorder the terms:
12x + -8x2 = -33 + 8x

Solving
12x + -8x2 = -33 + 8x

Solving for variable 'x'.

Reorder the terms:
33 + 12x + -8x + -8x2 = -33 + 8x + 33 + -8x

Combine like terms: 12x + -8x = 4x
33 + 4x + -8x2 = -33 + 8x + 33 + -8x

Reorder the terms:
33 + 4x + -8x2 = -33 + 33 + 8x + -8x

Combine like terms: -33 + 33 = 0
33 + 4x + -8x2 = 0 + 8x + -8x
33 + 4x + -8x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
33 + 4x + -8x2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-4.125 + -0.5x + x2 = 0

Move the constant term to the right:

Add '4.125' to each side of the equation.
-4.125 + -0.5x + 4.125 + x2 = 0 + 4.125

Reorder the terms:
-4.125 + 4.125 + -0.5x + x2 = 0 + 4.125

Combine like terms: -4.125 + 4.125 = 0.000
0.000 + -0.5x + x2 = 0 + 4.125
-0.5x + x2 = 0 + 4.125

Combine like terms: 0 + 4.125 = 4.125
-0.5x + x2 = 4.125

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 4.125 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 4.125 + 0.0625

Combine like terms: 4.125 + 0.0625 = 4.1875
0.0625 + -0.5x + x2 = 4.1875

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 4.1875

Calculate the square root of the right side: 2.046338193

Break this problem into two subproblems by setting 
(x + -0.25) equal to 2.046338193 and -2.046338193.

Subproblem 1

x + -0.25 = 2.046338193 Simplifying x + -0.25 = 2.046338193 Reorder the terms: -0.25 + x = 2.046338193 Solving -0.25 + x = 2.046338193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 2.046338193 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 2.046338193 + 0.25 x = 2.046338193 + 0.25 Combine like terms: 2.046338193 + 0.25 = 2.296338193 x = 2.296338193 Simplifying x = 2.296338193

Subproblem 2

x + -0.25 = -2.046338193 Simplifying x + -0.25 = -2.046338193 Reorder the terms: -0.25 + x = -2.046338193 Solving -0.25 + x = -2.046338193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -2.046338193 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -2.046338193 + 0.25 x = -2.046338193 + 0.25 Combine like terms: -2.046338193 + 0.25 = -1.796338193 x = -1.796338193 Simplifying x = -1.796338193

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.296338193, -1.796338193}

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