a^2+10a+20=-5

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Solution for a^2+10a+20=-5 equation:


Simplifying
a2 + 10a + 20 = -5

Reorder the terms:
20 + 10a + a2 = -5

Solving
20 + 10a + a2 = -5

Solving for variable 'a'.

Reorder the terms:
20 + 5 + 10a + a2 = -5 + 5

Combine like terms: 20 + 5 = 25
25 + 10a + a2 = -5 + 5

Combine like terms: -5 + 5 = 0
25 + 10a + a2 = 0

Factor a trinomial.
(5 + a)(5 + a) = 0

Subproblem 1

Set the factor '(5 + a)' equal to zero and attempt to solve: Simplifying 5 + a = 0 Solving 5 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + a = 0 + -5 a = 0 + -5 Combine like terms: 0 + -5 = -5 a = -5 Simplifying a = -5

Subproblem 2

Set the factor '(5 + a)' equal to zero and attempt to solve: Simplifying 5 + a = 0 Solving 5 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + a = 0 + -5 a = 0 + -5 Combine like terms: 0 + -5 = -5 a = -5 Simplifying a = -5

Solution

a = {-5, -5}

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