4=x^2+2x+5

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


Simplifying
4 = x2 + 2x + 5

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

Solving
4 = 5 + 2x + x2

Solving for variable 'x'.

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

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

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

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

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

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

Factor a trinomial.
-1((1 + x)(1 + x)) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-1, -1}

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