0=x^2+4x

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Solution for 0=x^2+4x equation:


Simplifying
0 = x2 + 4x

Reorder the terms:
0 = 4x + x2

Solving
0 = 4x + x2

Solving for variable 'x'.
Remove the zero:
-4x + -1x2 = 4x + x2 + -4x + -1x2

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

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

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

Factor out the Greatest Common Factor (GCF), '-1x'.
-1x(4 + x) = 0

Ignore the factor -1.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Solution

x = {0, -4}

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