0=a(a+4)

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Solution for 0=a(a+4) equation:


Simplifying
0 = a(a + 4)

Reorder the terms:
0 = a(4 + a)
0 = (4 * a + a * a)
0 = (4a + a2)

Solving
0 = 4a + a2

Solving for variable 'a'.
Remove the zero:
-4a + -1a2 = 4a + a2 + -4a + -1a2

Reorder the terms:
-4a + -1a2 = 4a + -4a + a2 + -1a2

Combine like terms: 4a + -4a = 0
-4a + -1a2 = 0 + a2 + -1a2
-4a + -1a2 = a2 + -1a2

Combine like terms: a2 + -1a2 = 0
-4a + -1a2 = 0

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

Ignore the factor -1.

Subproblem 1

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

Subproblem 2

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

Solution

a = {0, -4}

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