0=x^2+2x+5

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Solution for 0=x^2+2x+5 equation:


Simplifying
0 = x2 + 2x + 5

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

Solving
0 = 5 + 2x + x2

Solving for variable 'x'.

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

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

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

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

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

Factor out the Greatest Common Factor (GCF), '-1'.
-1(5 + 2x + x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(5 + 2x + x2)' equal to zero and attempt to solve: Simplifying 5 + 2x + x2 = 0 Solving 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. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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