=2s^2+13s+15

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Solution for =2s^2+13s+15 equation:


Simplifying
0 = 2s2 + 13s + 15

Reorder the terms:
0 = 15 + 13s + 2s2

Solving
0 = 15 + 13s + 2s2

Solving for variable 's'.

Combine like terms: 0 + -15 = -15
-15 + -13s + -2s2 = 15 + 13s + 2s2 + -15 + -13s + -2s2

Reorder the terms:
-15 + -13s + -2s2 = 15 + -15 + 13s + -13s + 2s2 + -2s2

Combine like terms: 15 + -15 = 0
-15 + -13s + -2s2 = 0 + 13s + -13s + 2s2 + -2s2
-15 + -13s + -2s2 = 13s + -13s + 2s2 + -2s2

Combine like terms: 13s + -13s = 0
-15 + -13s + -2s2 = 0 + 2s2 + -2s2
-15 + -13s + -2s2 = 2s2 + -2s2

Combine like terms: 2s2 + -2s2 = 0
-15 + -13s + -2s2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(15 + 13s + 2s2) = 0

Factor a trinomial.
-1((5 + s)(3 + 2s)) = 0

Ignore the factor -1.

Subproblem 1

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

Subproblem 2

Set the factor '(3 + 2s)' equal to zero and attempt to solve: Simplifying 3 + 2s = 0 Solving 3 + 2s = 0 Move all terms containing s to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 2s = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2s = 0 + -3 2s = 0 + -3 Combine like terms: 0 + -3 = -3 2s = -3 Divide each side by '2'. s = -1.5 Simplifying s = -1.5

Solution

s = {-5, -1.5}

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