6r^2+9r=60

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Solution for 6r^2+9r=60 equation:


Simplifying
6r2 + 9r = 60

Reorder the terms:
9r + 6r2 = 60

Solving
9r + 6r2 = 60

Solving for variable 'r'.

Reorder the terms:
-60 + 9r + 6r2 = 60 + -60

Combine like terms: 60 + -60 = 0
-60 + 9r + 6r2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-20 + 3r + 2r2) = 0

Factor a trinomial.
3((-4 + -1r)(5 + -2r)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-4 + -1r)' equal to zero and attempt to solve: Simplifying -4 + -1r = 0 Solving -4 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1r = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1r = 0 + 4 -1r = 0 + 4 Combine like terms: 0 + 4 = 4 -1r = 4 Divide each side by '-1'. r = -4 Simplifying r = -4

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, 2.5}

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