5=-x^2+4x-2

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Solution for 5=-x^2+4x-2 equation:


Simplifying
5 = -1x2 + 4x + -2

Reorder the terms:
5 = -2 + 4x + -1x2

Solving
5 = -2 + 4x + -1x2

Solving for variable 'x'.

Combine like terms: 5 + 2 = 7
7 + -4x + x2 = -2 + 4x + -1x2 + 2 + -4x + x2

Reorder the terms:
7 + -4x + x2 = -2 + 2 + 4x + -4x + -1x2 + x2

Combine like terms: -2 + 2 = 0
7 + -4x + x2 = 0 + 4x + -4x + -1x2 + x2
7 + -4x + x2 = 4x + -4x + -1x2 + x2

Combine like terms: 4x + -4x = 0
7 + -4x + x2 = 0 + -1x2 + x2
7 + -4x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
7 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + -4x + -7 + x2 = 0 + -7

Reorder the terms:
7 + -7 + -4x + x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -4x + x2 = 0 + -7
-4x + x2 = 0 + -7

Combine like terms: 0 + -7 = -7
-4x + x2 = -7

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -7 + 4

Reorder the terms:
4 + -4x + x2 = -7 + 4

Combine like terms: -7 + 4 = -3
4 + -4x + x2 = -3

Factor a perfect square on the left side:
(x + -2)(x + -2) = -3

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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