6r^2=65-11r

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Solution for 6r^2=65-11r equation:


Simplifying
6r2 = 65 + -11r

Solving
6r2 = 65 + -11r

Solving for variable 'r'.

Reorder the terms:
-65 + 11r + 6r2 = 65 + -11r + -65 + 11r

Reorder the terms:
-65 + 11r + 6r2 = 65 + -65 + -11r + 11r

Combine like terms: 65 + -65 = 0
-65 + 11r + 6r2 = 0 + -11r + 11r
-65 + 11r + 6r2 = -11r + 11r

Combine like terms: -11r + 11r = 0
-65 + 11r + 6r2 = 0

Factor a trinomial.
(-13 + -3r)(5 + -2r) = 0

Subproblem 1

Set the factor '(-13 + -3r)' equal to zero and attempt to solve: Simplifying -13 + -3r = 0 Solving -13 + -3r = 0 Move all terms containing r to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -3r = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -3r = 0 + 13 -3r = 0 + 13 Combine like terms: 0 + 13 = 13 -3r = 13 Divide each side by '-3'. r = -4.333333333 Simplifying r = -4.333333333

Subproblem 2

Set the factor '(5 + -2r)' equal to zero and attempt to solve: Simplifying 5 + -2r = 0 Solving 5 + -2r = 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 + -2r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2r = 0 + -5 -2r = 0 + -5 Combine like terms: 0 + -5 = -5 -2r = -5 Divide each side by '-2'. r = 2.5 Simplifying r = 2.5

Solution

r = {-4.333333333, 2.5}

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