x^2+20x=33

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Solution for x^2+20x=33 equation:


Simplifying
x2 + 20x = 33

Reorder the terms:
20x + x2 = 33

Solving
20x + x2 = 33

Solving for variable 'x'.

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

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

Begin completing the square.

Move the constant term to the right:

Add '33' to each side of the equation.
-33 + 20x + 33 + x2 = 0 + 33

Reorder the terms:
-33 + 33 + 20x + x2 = 0 + 33

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

Combine like terms: 0 + 33 = 33
20x + x2 = 33

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = 33 + 100

Reorder the terms:
100 + 20x + x2 = 33 + 100

Combine like terms: 33 + 100 = 133
100 + 20x + x2 = 133

Factor a perfect square on the left side:
(x + 10)(x + 10) = 133

Calculate the square root of the right side: 11.532562595

Break this problem into two subproblems by setting 
(x + 10) equal to 11.532562595 and -11.532562595.

Subproblem 1

x + 10 = 11.532562595 Simplifying x + 10 = 11.532562595 Reorder the terms: 10 + x = 11.532562595 Solving 10 + x = 11.532562595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 11.532562595 + -10 Combine like terms: 10 + -10 = 0 0 + x = 11.532562595 + -10 x = 11.532562595 + -10 Combine like terms: 11.532562595 + -10 = 1.532562595 x = 1.532562595 Simplifying x = 1.532562595

Subproblem 2

x + 10 = -11.532562595 Simplifying x + 10 = -11.532562595 Reorder the terms: 10 + x = -11.532562595 Solving 10 + x = -11.532562595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -11.532562595 + -10 Combine like terms: 10 + -10 = 0 0 + x = -11.532562595 + -10 x = -11.532562595 + -10 Combine like terms: -11.532562595 + -10 = -21.532562595 x = -21.532562595 Simplifying x = -21.532562595

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.532562595, -21.532562595}

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