6r^2+7r+8=6

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Solution for 6r^2+7r+8=6 equation:


Simplifying
6r2 + 7r + 8 = 6

Reorder the terms:
8 + 7r + 6r2 = 6

Solving
8 + 7r + 6r2 = 6

Solving for variable 'r'.

Reorder the terms:
8 + -6 + 7r + 6r2 = 6 + -6

Combine like terms: 8 + -6 = 2
2 + 7r + 6r2 = 6 + -6

Combine like terms: 6 + -6 = 0
2 + 7r + 6r2 = 0

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

Subproblem 1

Set the factor '(2 + 3r)' equal to zero and attempt to solve: Simplifying 2 + 3r = 0 Solving 2 + 3r = 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 + 3r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3r = 0 + -2 3r = 0 + -2 Combine like terms: 0 + -2 = -2 3r = -2 Divide each side by '3'. r = -0.6666666667 Simplifying r = -0.6666666667

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 = {-0.6666666667, -0.5}

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