=-x^2+2x-5

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Solution for =-x^2+2x-5 equation:


Simplifying
0 = -1x2 + 2x + -5

Reorder the terms:
0 = -5 + 2x + -1x2

Solving
0 = -5 + 2x + -1x2

Solving for variable 'x'.

Combine like terms: 0 + 5 = 5
5 + -2x + x2 = -5 + 2x + -1x2 + 5 + -2x + x2

Reorder the terms:
5 + -2x + x2 = -5 + 5 + 2x + -2x + -1x2 + x2

Combine like terms: -5 + 5 = 0
5 + -2x + x2 = 0 + 2x + -2x + -1x2 + x2
5 + -2x + x2 = 2x + -2x + -1x2 + x2

Combine like terms: 2x + -2x = 0
5 + -2x + x2 = 0 + -1x2 + x2
5 + -2x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
5 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -2x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -2x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -2x + x2 = 0 + -5
-2x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-2x + x2 = -5

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -5 + 1

Reorder the terms:
1 + -2x + x2 = -5 + 1

Combine like terms: -5 + 1 = -4
1 + -2x + x2 = -4

Factor a perfect square on the left side:
(x + -1)(x + -1) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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