6r^2+18r=-12

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Solution for 6r^2+18r=-12 equation:


Simplifying
6r2 + 18r = -12

Reorder the terms:
18r + 6r2 = -12

Solving
18r + 6r2 = -12

Solving for variable 'r'.

Reorder the terms:
12 + 18r + 6r2 = -12 + 12

Combine like terms: -12 + 12 = 0
12 + 18r + 6r2 = 0

Factor out the Greatest Common Factor (GCF), '6'.
6(2 + 3r + r2) = 0

Factor a trinomial.
6((2 + r)(1 + r)) = 0

Ignore the factor 6.

Subproblem 1

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

Subproblem 2

Set the factor '(1 + r)' equal to zero and attempt to solve: Simplifying 1 + r = 0 Solving 1 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + r = 0 + -1 Combine like terms: 1 + -1 = 0 0 + r = 0 + -1 r = 0 + -1 Combine like terms: 0 + -1 = -1 r = -1 Simplifying r = -1

Solution

r = {-2, -1}

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