5=-x^2+2x+3

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Solution for 5=-x^2+2x+3 equation:


Simplifying
5 = -1x2 + 2x + 3

Reorder the terms:
5 = 3 + 2x + -1x2

Solving
5 = 3 + 2x + -1x2

Solving for variable 'x'.

Combine like terms: 5 + -3 = 2
2 + -2x + x2 = 3 + 2x + -1x2 + -3 + -2x + x2

Reorder the terms:
2 + -2x + x2 = 3 + -3 + 2x + -2x + -1x2 + x2

Combine like terms: 3 + -3 = 0
2 + -2x + x2 = 0 + 2x + -2x + -1x2 + x2
2 + -2x + x2 = 2x + -2x + -1x2 + x2

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

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

Begin completing the square.

Move the constant term to the right:

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

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

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

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

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 = -2 + 1

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

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

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

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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