Question 468130
For the following function: 
f(x)=x^6-7x^4-2x+7
(A)Find the maximum number of real zeros::: 6 
(B)Use Descartes's rule of signs to determine how many positive and how many negative zeros the function has. You do not need to find the zeros.
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f(x) has 2 changes of sign
so f has 0 or 2 positive zeros
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f(-x) = x^6-7x^4+2x+7 has 2 changes of sign
so f has 0 or 2 negative zeros
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Cheers,
Stan H.
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