a^2+12a+79=7-5a

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Solution for a^2+12a+79=7-5a equation:


Simplifying
a2 + 12a + 79 = 7 + -5a

Reorder the terms:
79 + 12a + a2 = 7 + -5a

Solving
79 + 12a + a2 = 7 + -5a

Solving for variable 'a'.

Reorder the terms:
79 + -7 + 12a + 5a + a2 = 7 + -5a + -7 + 5a

Combine like terms: 79 + -7 = 72
72 + 12a + 5a + a2 = 7 + -5a + -7 + 5a

Combine like terms: 12a + 5a = 17a
72 + 17a + a2 = 7 + -5a + -7 + 5a

Reorder the terms:
72 + 17a + a2 = 7 + -7 + -5a + 5a

Combine like terms: 7 + -7 = 0
72 + 17a + a2 = 0 + -5a + 5a
72 + 17a + a2 = -5a + 5a

Combine like terms: -5a + 5a = 0
72 + 17a + a2 = 0

Factor a trinomial.
(9 + a)(8 + a) = 0

Subproblem 1

Set the factor '(9 + a)' equal to zero and attempt to solve: Simplifying 9 + a = 0 Solving 9 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + a = 0 + -9 a = 0 + -9 Combine like terms: 0 + -9 = -9 a = -9 Simplifying a = -9

Subproblem 2

Set the factor '(8 + a)' equal to zero and attempt to solve: Simplifying 8 + a = 0 Solving 8 + a = 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 + a = 0 + -8 Combine like terms: 8 + -8 = 0 0 + a = 0 + -8 a = 0 + -8 Combine like terms: 0 + -8 = -8 a = -8 Simplifying a = -8

Solution

a = {-9, -8}

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