x^2-33x+42=0

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Solution for x^2-33x+42=0 equation:


Simplifying
x2 + -33x + 42 = 0

Reorder the terms:
42 + -33x + x2 = 0

Solving
42 + -33x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-42' to each side of the equation.
42 + -33x + -42 + x2 = 0 + -42

Reorder the terms:
42 + -42 + -33x + x2 = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -33x + x2 = 0 + -42
-33x + x2 = 0 + -42

Combine like terms: 0 + -42 = -42
-33x + x2 = -42

The x term is -33x.  Take half its coefficient (-16.5).
Square it (272.25) and add it to both sides.

Add '272.25' to each side of the equation.
-33x + 272.25 + x2 = -42 + 272.25

Reorder the terms:
272.25 + -33x + x2 = -42 + 272.25

Combine like terms: -42 + 272.25 = 230.25
272.25 + -33x + x2 = 230.25

Factor a perfect square on the left side:
(x + -16.5)(x + -16.5) = 230.25

Calculate the square root of the right side: 15.173990905

Break this problem into two subproblems by setting 
(x + -16.5) equal to 15.173990905 and -15.173990905.

Subproblem 1

x + -16.5 = 15.173990905 Simplifying x + -16.5 = 15.173990905 Reorder the terms: -16.5 + x = 15.173990905 Solving -16.5 + x = 15.173990905 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16.5' to each side of the equation. -16.5 + 16.5 + x = 15.173990905 + 16.5 Combine like terms: -16.5 + 16.5 = 0.0 0.0 + x = 15.173990905 + 16.5 x = 15.173990905 + 16.5 Combine like terms: 15.173990905 + 16.5 = 31.673990905 x = 31.673990905 Simplifying x = 31.673990905

Subproblem 2

x + -16.5 = -15.173990905 Simplifying x + -16.5 = -15.173990905 Reorder the terms: -16.5 + x = -15.173990905 Solving -16.5 + x = -15.173990905 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16.5' to each side of the equation. -16.5 + 16.5 + x = -15.173990905 + 16.5 Combine like terms: -16.5 + 16.5 = 0.0 0.0 + x = -15.173990905 + 16.5 x = -15.173990905 + 16.5 Combine like terms: -15.173990905 + 16.5 = 1.326009095 x = 1.326009095 Simplifying x = 1.326009095

Solution

The solution to the problem is based on the solutions from the subproblems. x = {31.673990905, 1.326009095}

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