x^2+20x-194=0

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Solution for x^2+20x-194=0 equation:


Simplifying
x2 + 20x + -194 = 0

Reorder the terms:
-194 + 20x + x2 = 0

Solving
-194 + 20x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '194' to each side of the equation.
-194 + 20x + 194 + x2 = 0 + 194

Reorder the terms:
-194 + 194 + 20x + x2 = 0 + 194

Combine like terms: -194 + 194 = 0
0 + 20x + x2 = 0 + 194
20x + x2 = 0 + 194

Combine like terms: 0 + 194 = 194
20x + x2 = 194

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 = 194 + 100

Reorder the terms:
100 + 20x + x2 = 194 + 100

Combine like terms: 194 + 100 = 294
100 + 20x + x2 = 294

Factor a perfect square on the left side:
(x + 10)(x + 10) = 294

Calculate the square root of the right side: 17.146428199

Break this problem into two subproblems by setting 
(x + 10) equal to 17.146428199 and -17.146428199.

Subproblem 1

x + 10 = 17.146428199 Simplifying x + 10 = 17.146428199 Reorder the terms: 10 + x = 17.146428199 Solving 10 + x = 17.146428199 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 = 17.146428199 + -10 Combine like terms: 10 + -10 = 0 0 + x = 17.146428199 + -10 x = 17.146428199 + -10 Combine like terms: 17.146428199 + -10 = 7.146428199 x = 7.146428199 Simplifying x = 7.146428199

Subproblem 2

x + 10 = -17.146428199 Simplifying x + 10 = -17.146428199 Reorder the terms: 10 + x = -17.146428199 Solving 10 + x = -17.146428199 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 = -17.146428199 + -10 Combine like terms: 10 + -10 = 0 0 + x = -17.146428199 + -10 x = -17.146428199 + -10 Combine like terms: -17.146428199 + -10 = -27.146428199 x = -27.146428199 Simplifying x = -27.146428199

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.146428199, -27.146428199}

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