a^2+3a+20=8-5a

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Solution for a^2+3a+20=8-5a equation:


Simplifying
a2 + 3a + 20 = 8 + -5a

Reorder the terms:
20 + 3a + a2 = 8 + -5a

Solving
20 + 3a + a2 = 8 + -5a

Solving for variable 'a'.

Reorder the terms:
20 + -8 + 3a + 5a + a2 = 8 + -5a + -8 + 5a

Combine like terms: 20 + -8 = 12
12 + 3a + 5a + a2 = 8 + -5a + -8 + 5a

Combine like terms: 3a + 5a = 8a
12 + 8a + a2 = 8 + -5a + -8 + 5a

Reorder the terms:
12 + 8a + a2 = 8 + -8 + -5a + 5a

Combine like terms: 8 + -8 = 0
12 + 8a + a2 = 0 + -5a + 5a
12 + 8a + a2 = -5a + 5a

Combine like terms: -5a + 5a = 0
12 + 8a + a2 = 0

Factor a trinomial.
(6 + a)(2 + a) = 0

Subproblem 1

Set the factor '(6 + a)' equal to zero and attempt to solve: Simplifying 6 + a = 0 Solving 6 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + a = 0 + -6 Combine like terms: 6 + -6 = 0 0 + a = 0 + -6 a = 0 + -6 Combine like terms: 0 + -6 = -6 a = -6 Simplifying a = -6

Subproblem 2

Set the factor '(2 + a)' equal to zero and attempt to solve: Simplifying 2 + a = 0 Solving 2 + a = 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 + a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + a = 0 + -2 a = 0 + -2 Combine like terms: 0 + -2 = -2 a = -2 Simplifying a = -2

Solution

a = {-6, -2}

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