-x^2+20x-98=x

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Solution for -x^2+20x-98=x equation:


Simplifying
-1x2 + 20x + -98 = x

Reorder the terms:
-98 + 20x + -1x2 = x

Solving
-98 + 20x + -1x2 = x

Solving for variable 'x'.

Reorder the terms:
-98 + 20x + -1x + -1x2 = x + -1x

Combine like terms: 20x + -1x = 19x
-98 + 19x + -1x2 = x + -1x

Combine like terms: x + -1x = 0
-98 + 19x + -1x2 = 0

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

Divide each side by '-1'.
98 + -19x + x2 = 0

Move the constant term to the right:

Add '-98' to each side of the equation.
98 + -19x + -98 + x2 = 0 + -98

Reorder the terms:
98 + -98 + -19x + x2 = 0 + -98

Combine like terms: 98 + -98 = 0
0 + -19x + x2 = 0 + -98
-19x + x2 = 0 + -98

Combine like terms: 0 + -98 = -98
-19x + x2 = -98

The x term is -19x.  Take half its coefficient (-9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
-19x + 90.25 + x2 = -98 + 90.25

Reorder the terms:
90.25 + -19x + x2 = -98 + 90.25

Combine like terms: -98 + 90.25 = -7.75
90.25 + -19x + x2 = -7.75

Factor a perfect square on the left side:
(x + -9.5)(x + -9.5) = -7.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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