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Find the Zeros and Their Multiplicities f(x)=x9+10x8+27x7+20x6+50x5f ( x ) = x ^ { 9 } + 10 x ^ { 8 } + 27 x ^ { 7 } + 20 x ^ { 6 } + 50 x ^ { 5 }

Question 293

Multiple Choice

Find the zeros and their multiplicities. Consider using Descartes' rule of signs and the upper and lower
bound theorem to limit your search for rational zeros.
- f(x) =x9+10x8+27x7+20x6+50x5f ( x ) = x ^ { 9 } + 10 x ^ { 8 } + 27 x ^ { 7 } + 20 x ^ { 6 } + 50 x ^ { 5 }


A) 0 (multiplicity 5) , 5 (multiplicity 2 ) and ±i2\pm i \sqrt { 2 } (each multiplicity 1 )
B) 0 (multiplicity 5 ) , 5- 5 (multiplicity 2 ) and ±i2\pm i \sqrt { 2 } (each multiplicity 1 )
C) 0 (multiplicity 5) , 5 (multiplicity 2 ) and ±2i\pm 2 i (each multiplicity 1 )
D) 0 (multiplicity 5) , 5 (multiplicity 2 ) and ±2\pm \sqrt { 2 } (each multiplicity 1) 1 )

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