-x^2+100x-6400=0

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Solution for -x^2+100x-6400=0 equation:


Simplifying
-1x2 + 100x + -6400 = 0

Reorder the terms:
-6400 + 100x + -1x2 = 0

Solving
-6400 + 100x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
6400 + -100x + x2 = 0

Move the constant term to the right:

Add '-6400' to each side of the equation.
6400 + -100x + -6400 + x2 = 0 + -6400

Reorder the terms:
6400 + -6400 + -100x + x2 = 0 + -6400

Combine like terms: 6400 + -6400 = 0
0 + -100x + x2 = 0 + -6400
-100x + x2 = 0 + -6400

Combine like terms: 0 + -6400 = -6400
-100x + x2 = -6400

The x term is -100x.  Take half its coefficient (-50).
Square it (2500) and add it to both sides.

Add '2500' to each side of the equation.
-100x + 2500 + x2 = -6400 + 2500

Reorder the terms:
2500 + -100x + x2 = -6400 + 2500

Combine like terms: -6400 + 2500 = -3900
2500 + -100x + x2 = -3900

Factor a perfect square on the left side:
(x + -50)(x + -50) = -3900

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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