20x^2-75x=-3x+33

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Solution for 20x^2-75x=-3x+33 equation:


Simplifying
20x2 + -75x = -3x + 33

Reorder the terms:
-75x + 20x2 = -3x + 33

Reorder the terms:
-75x + 20x2 = 33 + -3x

Solving
-75x + 20x2 = 33 + -3x

Solving for variable 'x'.

Reorder the terms:
-33 + -75x + 3x + 20x2 = 33 + -3x + -33 + 3x

Combine like terms: -75x + 3x = -72x
-33 + -72x + 20x2 = 33 + -3x + -33 + 3x

Reorder the terms:
-33 + -72x + 20x2 = 33 + -33 + -3x + 3x

Combine like terms: 33 + -33 = 0
-33 + -72x + 20x2 = 0 + -3x + 3x
-33 + -72x + 20x2 = -3x + 3x

Combine like terms: -3x + 3x = 0
-33 + -72x + 20x2 = 0

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

Divide each side by '20'.
-1.65 + -3.6x + x2 = 0

Move the constant term to the right:

Add '1.65' to each side of the equation.
-1.65 + -3.6x + 1.65 + x2 = 0 + 1.65

Reorder the terms:
-1.65 + 1.65 + -3.6x + x2 = 0 + 1.65

Combine like terms: -1.65 + 1.65 = 0.00
0.00 + -3.6x + x2 = 0 + 1.65
-3.6x + x2 = 0 + 1.65

Combine like terms: 0 + 1.65 = 1.65
-3.6x + x2 = 1.65

The x term is -3.6x.  Take half its coefficient (-1.8).
Square it (3.24) and add it to both sides.

Add '3.24' to each side of the equation.
-3.6x + 3.24 + x2 = 1.65 + 3.24

Reorder the terms:
3.24 + -3.6x + x2 = 1.65 + 3.24

Combine like terms: 1.65 + 3.24 = 4.89
3.24 + -3.6x + x2 = 4.89

Factor a perfect square on the left side:
(x + -1.8)(x + -1.8) = 4.89

Calculate the square root of the right side: 2.211334439

Break this problem into two subproblems by setting 
(x + -1.8) equal to 2.211334439 and -2.211334439.

Subproblem 1

x + -1.8 = 2.211334439 Simplifying x + -1.8 = 2.211334439 Reorder the terms: -1.8 + x = 2.211334439 Solving -1.8 + x = 2.211334439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8' to each side of the equation. -1.8 + 1.8 + x = 2.211334439 + 1.8 Combine like terms: -1.8 + 1.8 = 0.0 0.0 + x = 2.211334439 + 1.8 x = 2.211334439 + 1.8 Combine like terms: 2.211334439 + 1.8 = 4.011334439 x = 4.011334439 Simplifying x = 4.011334439

Subproblem 2

x + -1.8 = -2.211334439 Simplifying x + -1.8 = -2.211334439 Reorder the terms: -1.8 + x = -2.211334439 Solving -1.8 + x = -2.211334439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8' to each side of the equation. -1.8 + 1.8 + x = -2.211334439 + 1.8 Combine like terms: -1.8 + 1.8 = 0.0 0.0 + x = -2.211334439 + 1.8 x = -2.211334439 + 1.8 Combine like terms: -2.211334439 + 1.8 = -0.411334439 x = -0.411334439 Simplifying x = -0.411334439

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.011334439, -0.411334439}

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