a^2+8a=2a-9

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Solution for a^2+8a=2a-9 equation:


Simplifying
a2 + 8a = 2a + -9

Reorder the terms:
8a + a2 = 2a + -9

Reorder the terms:
8a + a2 = -9 + 2a

Solving
8a + a2 = -9 + 2a

Solving for variable 'a'.

Reorder the terms:
9 + 8a + -2a + a2 = -9 + 2a + 9 + -2a

Combine like terms: 8a + -2a = 6a
9 + 6a + a2 = -9 + 2a + 9 + -2a

Reorder the terms:
9 + 6a + a2 = -9 + 9 + 2a + -2a

Combine like terms: -9 + 9 = 0
9 + 6a + a2 = 0 + 2a + -2a
9 + 6a + a2 = 2a + -2a

Combine like terms: 2a + -2a = 0
9 + 6a + a2 = 0

Factor a trinomial.
(3 + a)(3 + a) = 0

Subproblem 1

Set the factor '(3 + a)' equal to zero and attempt to solve: Simplifying 3 + a = 0 Solving 3 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + a = 0 + -3 a = 0 + -3 Combine like terms: 0 + -3 = -3 a = -3 Simplifying a = -3

Subproblem 2

Set the factor '(3 + a)' equal to zero and attempt to solve: Simplifying 3 + a = 0 Solving 3 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + a = 0 + -3 a = 0 + -3 Combine like terms: 0 + -3 = -3 a = -3 Simplifying a = -3

Solution

a = {-3, -3}

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