Answers

2014-10-10T01:44:14+08:00
The degree of the polynomial will determine the number of zeros in it..
take these examples 
      a.)x - 4 = 0
          x = 4  -----one zero
      b.) x²+2x+1=0 ------>(x+1)(x+1) = 0
           x = -1, x= -1   ---two zeros
      c.) x³ - 4x = 0
          x(x² - 4) = 0
          x(x-2)(x+2)=0
          x = 0, x = 2, x = -2  ----three zeros
therefore knowing that the polynomial is in 9th degree, we can conclude that there are at most 9 zeros..
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