-x^2+15x-63=0

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Solution for -x^2+15x-63=0 equation:


Simplifying
-1x2 + 15x + -63 = 0

Reorder the terms:
-63 + 15x + -1x2 = 0

Solving
-63 + 15x + -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'.
63 + -15x + x2 = 0

Move the constant term to the right:

Add '-63' to each side of the equation.
63 + -15x + -63 + x2 = 0 + -63

Reorder the terms:
63 + -63 + -15x + x2 = 0 + -63

Combine like terms: 63 + -63 = 0
0 + -15x + x2 = 0 + -63
-15x + x2 = 0 + -63

Combine like terms: 0 + -63 = -63
-15x + x2 = -63

The x term is -15x.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15x + 56.25 + x2 = -63 + 56.25

Reorder the terms:
56.25 + -15x + x2 = -63 + 56.25

Combine like terms: -63 + 56.25 = -6.75
56.25 + -15x + x2 = -6.75

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = -6.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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