0=x^2-20x+104

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Solution for 0=x^2-20x+104 equation:


Simplifying
0 = x2 + -20x + 104

Reorder the terms:
0 = 104 + -20x + x2

Solving
0 = 104 + -20x + x2

Solving for variable 'x'.

Combine like terms: 0 + -104 = -104
-104 + 20x + -1x2 = 104 + -20x + x2 + -104 + 20x + -1x2

Reorder the terms:
-104 + 20x + -1x2 = 104 + -104 + -20x + 20x + x2 + -1x2

Combine like terms: 104 + -104 = 0
-104 + 20x + -1x2 = 0 + -20x + 20x + x2 + -1x2
-104 + 20x + -1x2 = -20x + 20x + x2 + -1x2

Combine like terms: -20x + 20x = 0
-104 + 20x + -1x2 = 0 + x2 + -1x2
-104 + 20x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-104 + 20x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
104 + -20x + x2 = 0

Move the constant term to the right:

Add '-104' to each side of the equation.
104 + -20x + -104 + x2 = 0 + -104

Reorder the terms:
104 + -104 + -20x + x2 = 0 + -104

Combine like terms: 104 + -104 = 0
0 + -20x + x2 = 0 + -104
-20x + x2 = 0 + -104

Combine like terms: 0 + -104 = -104
-20x + x2 = -104

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 = -104 + 100

Reorder the terms:
100 + -20x + x2 = -104 + 100

Combine like terms: -104 + 100 = -4
100 + -20x + x2 = -4

Factor a perfect square on the left side:
(x + -10)(x + -10) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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