6r^2=20+26r

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Solution for 6r^2=20+26r equation:


Simplifying
6r2 = 20 + 26r

Solving
6r2 = 20 + 26r

Solving for variable 'r'.

Reorder the terms:
-20 + -26r + 6r2 = 20 + 26r + -20 + -26r

Reorder the terms:
-20 + -26r + 6r2 = 20 + -20 + 26r + -26r

Combine like terms: 20 + -20 = 0
-20 + -26r + 6r2 = 0 + 26r + -26r
-20 + -26r + 6r2 = 26r + -26r

Combine like terms: 26r + -26r = 0
-20 + -26r + 6r2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-10 + -13r + 3r2) = 0

Factor a trinomial.
2((-2 + -3r)(5 + -1r)) = 0

Ignore the factor 2.

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 '(5 + -1r)' equal to zero and attempt to solve: Simplifying 5 + -1r = 0 Solving 5 + -1r = 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 + -1r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1r = 0 + -5 -1r = 0 + -5 Combine like terms: 0 + -5 = -5 -1r = -5 Divide each side by '-1'. r = 5 Simplifying r = 5

Solution

r = {-0.6666666667, 5}

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