Find all the zeros of each equation.

x5 – 3x4 – 15x3 – 45x2 – 16x + 48 = 0

A. 3, 4, i
B. 4, –4, i,–i
C. 3, 4, –4, i, –i
D. 3, –4, –i

Question

Find all the zeros of each equation.
  
x5 – 3x4 – 15x3 – 45x2 – 16x + 48 = 0  

 A.   3, 4, i
 B.   4, –4, i,–i
 C.  3, 4, –4, i, –i
 D.  3, –4, –i

anonymous · Answer

factor GCF from first two terms,
factor GCF from middle two erms
factor GCF from last two terms

anonymous · Answer

x5 – 3x4 – 15x3 – 45x2 – 16x + 48 = 0 
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anonymous · Answer

So would it be C?

anonymous · Answer

if you want to actually solve it, there is long way to go.
you cant conclude the answer as C yet :|

anonymous · Answer

i did work before asking it here, i just need to make sure my answer is correct

anonymous · Answer

il need to work it, to check ur answer...

anonymous · Answer

you can use wolfram to check ur answers if u want : http://www.wolframalpha.com/input/?i=x5+%E2%80%93+3x4+%E2%80%93+15x3+%2B+45x2+%E2%80%93+16x+%2B+48+%3D+0+

anonymous · Answer

thanks

anonymous · Answer

np :) and yes your answer is correct !