a^2-4a=16+2a

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Solution for a^2-4a=16+2a equation:


Simplifying
a2 + -4a = 16 + 2a

Reorder the terms:
-4a + a2 = 16 + 2a

Solving
-4a + a2 = 16 + 2a

Solving for variable 'a'.

Reorder the terms:
-16 + -4a + -2a + a2 = 16 + 2a + -16 + -2a

Combine like terms: -4a + -2a = -6a
-16 + -6a + a2 = 16 + 2a + -16 + -2a

Reorder the terms:
-16 + -6a + a2 = 16 + -16 + 2a + -2a

Combine like terms: 16 + -16 = 0
-16 + -6a + a2 = 0 + 2a + -2a
-16 + -6a + a2 = 2a + -2a

Combine like terms: 2a + -2a = 0
-16 + -6a + a2 = 0

Factor a trinomial.
(-2 + -1a)(8 + -1a) = 0

Subproblem 1

Set the factor '(-2 + -1a)' equal to zero and attempt to solve: Simplifying -2 + -1a = 0 Solving -2 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1a = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1a = 0 + 2 -1a = 0 + 2 Combine like terms: 0 + 2 = 2 -1a = 2 Divide each side by '-1'. a = -2 Simplifying a = -2

Subproblem 2

Set the factor '(8 + -1a)' equal to zero and attempt to solve: Simplifying 8 + -1a = 0 Solving 8 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1a = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1a = 0 + -8 -1a = 0 + -8 Combine like terms: 0 + -8 = -8 -1a = -8 Divide each side by '-1'. a = 8 Simplifying a = 8

Solution

a = {-2, 8}

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