-12r^2-38r-16=0

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Solution for -12r^2-38r-16=0 equation:


Simplifying
-12r2 + -38r + -16 = 0

Reorder the terms:
-16 + -38r + -12r2 = 0

Solving
-16 + -38r + -12r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '-2'.
-2(8 + 19r + 6r2) = 0

Factor a trinomial.
-2((8 + 3r)(1 + 2r)) = 0

Ignore the factor -2.

Subproblem 1

Set the factor '(8 + 3r)' equal to zero and attempt to solve: Simplifying 8 + 3r = 0 Solving 8 + 3r = 0 Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 3r = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 3r = 0 + -8 3r = 0 + -8 Combine like terms: 0 + -8 = -8 3r = -8 Divide each side by '3'. r = -2.666666667 Simplifying r = -2.666666667

Subproblem 2

Set the factor '(1 + 2r)' equal to zero and attempt to solve: Simplifying 1 + 2r = 0 Solving 1 + 2r = 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 + 2r = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2r = 0 + -1 2r = 0 + -1 Combine like terms: 0 + -1 = -1 2r = -1 Divide each side by '2'. r = -0.5 Simplifying r = -0.5

Solution

r = {-2.666666667, -0.5}

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