7a^2+77a=-168

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Solution for 7a^2+77a=-168 equation:


Simplifying
7a2 + 77a = -168

Reorder the terms:
77a + 7a2 = -168

Solving
77a + 7a2 = -168

Solving for variable 'a'.

Reorder the terms:
168 + 77a + 7a2 = -168 + 168

Combine like terms: -168 + 168 = 0
168 + 77a + 7a2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(24 + 11a + a2) = 0

Factor a trinomial.
7((8 + a)(3 + a)) = 0

Ignore the factor 7.

Subproblem 1

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

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 = {-8, -3}

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