Question
11 Find all possible zeros.
a) f(r) = xª – 21² – 20r
b) f(r) = 3r4 – 2r3 – 25x² + 28x + 12
c) f(r)= -2rª + 19x³ – 52.2 + 29x + 30
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11 Find all possible zeros. a) f(r) = xª – 21² – 20r b) f(r) = 3r4 – 2r3 – 25x² + 28x + 12 c) f(r)= -2rª + 19x³ – 52.2 + 29x + 30

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