16r^2+18r+5=0

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Solution for 16r^2+18r+5=0 equation:


Simplifying
16r2 + 18r + 5 = 0

Reorder the terms:
5 + 18r + 16r2 = 0

Solving
5 + 18r + 16r2 = 0

Solving for variable 'r'.

Factor a trinomial.
(5 + 8r)(1 + 2r) = 0

Subproblem 1

Set the factor '(5 + 8r)' equal to zero and attempt to solve: Simplifying 5 + 8r = 0 Solving 5 + 8r = 0 Move all terms containing r to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 8r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 8r = 0 + -5 8r = 0 + -5 Combine like terms: 0 + -5 = -5 8r = -5 Divide each side by '8'. r = -0.625 Simplifying r = -0.625

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 = {-0.625, -0.5}

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