(8r-3)(r+2)=0

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Solution for (8r-3)(r+2)=0 equation:


Simplifying
(8r + -3)(r + 2) = 0

Reorder the terms:
(-3 + 8r)(r + 2) = 0

Reorder the terms:
(-3 + 8r)(2 + r) = 0

Multiply (-3 + 8r) * (2 + r)
(-3(2 + r) + 8r * (2 + r)) = 0
((2 * -3 + r * -3) + 8r * (2 + r)) = 0
((-6 + -3r) + 8r * (2 + r)) = 0
(-6 + -3r + (2 * 8r + r * 8r)) = 0
(-6 + -3r + (16r + 8r2)) = 0

Combine like terms: -3r + 16r = 13r
(-6 + 13r + 8r2) = 0

Solving
-6 + 13r + 8r2 = 0

Solving for variable 'r'.

Factor a trinomial.
(-2 + -1r)(3 + -8r) = 0

Subproblem 1

Set the factor '(-2 + -1r)' equal to zero and attempt to solve: Simplifying -2 + -1r = 0 Solving -2 + -1r = 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 + -1r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1r = 0 + 2 -1r = 0 + 2 Combine like terms: 0 + 2 = 2 -1r = 2 Divide each side by '-1'. r = -2 Simplifying r = -2

Subproblem 2

Set the factor '(3 + -8r)' equal to zero and attempt to solve: Simplifying 3 + -8r = 0 Solving 3 + -8r = 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 + -8r = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -8r = 0 + -3 -8r = 0 + -3 Combine like terms: 0 + -3 = -3 -8r = -3 Divide each side by '-8'. r = 0.375 Simplifying r = 0.375

Solution

r = {-2, 0.375}

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