(11r+9)(2r-3)=0

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Solution for (11r+9)(2r-3)=0 equation:


Simplifying
(11r + 9)(2r + -3) = 0

Reorder the terms:
(9 + 11r)(2r + -3) = 0

Reorder the terms:
(9 + 11r)(-3 + 2r) = 0

Multiply (9 + 11r) * (-3 + 2r)
(9(-3 + 2r) + 11r * (-3 + 2r)) = 0
((-3 * 9 + 2r * 9) + 11r * (-3 + 2r)) = 0
((-27 + 18r) + 11r * (-3 + 2r)) = 0
(-27 + 18r + (-3 * 11r + 2r * 11r)) = 0
(-27 + 18r + (-33r + 22r2)) = 0

Combine like terms: 18r + -33r = -15r
(-27 + -15r + 22r2) = 0

Solving
-27 + -15r + 22r2 = 0

Solving for variable 'r'.

Factor a trinomial.
(-9 + -11r)(3 + -2r) = 0

Subproblem 1

Set the factor '(-9 + -11r)' equal to zero and attempt to solve: Simplifying -9 + -11r = 0 Solving -9 + -11r = 0 Move all terms containing r to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -11r = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -11r = 0 + 9 -11r = 0 + 9 Combine like terms: 0 + 9 = 9 -11r = 9 Divide each side by '-11'. r = -0.8181818182 Simplifying r = -0.8181818182

Subproblem 2

Set the factor '(3 + -2r)' equal to zero and attempt to solve: Simplifying 3 + -2r = 0 Solving 3 + -2r = 0 Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2r = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2r = 0 + -3 -2r = 0 + -3 Combine like terms: 0 + -3 = -3 -2r = -3 Divide each side by '-2'. r = 1.5 Simplifying r = 1.5

Solution

r = {-0.8181818182, 1.5}

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