APFIVE Geometric Series Common Ratio
What are all values of $$r$$ that satisfy the equation $$\frac{5(1-r^3)}{1-r} = 35$$?
A
$$-3$$
B
$$\{1,\,2,\,-3\}$$
C
$$\{2,\,-3\}$$
D
$$2$$
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What are all values of $$r$$ that satisfy the equation $$\frac{5(1-r^3)}{1-r} = 35$$?
$$-3$$
$$\{1,\,2,\,-3\}$$
$$\{2,\,-3\}$$
$$2$$
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