What are the possible number of negative zeros of f(x) = –2x7 – 2x6 + 7x5 – 7x4 + 4x3 + 4x2 ?

7, 5, 3, or 1

3 or 1

2 or 0

2

Question

What are the possible number of negative zeros of f(x) = –2x7 – 2x6 + 7x5 – 7x4 + 4x3 + 4x2 ? 

 7, 5, 3, or 1 

 3 or 1 

 2 or 0 

 2

anonymous · Answer

Oh, hello again.. lol

anonymous · Answer

This one you don't even have to calculate, think of what is in every term and what it means for your equation.

anonymous · Answer

Hmmm?

anonymous · Answer

when you have a x in every term, zero is always a root, because f(0)=0, now they only ask for negative roots if I get them right, which is a bit distracting to me.

anonymous · Answer

By intuition I would say the answer c is correct, since it is obvious and I can't imagine that your teacher/professor would want you to solve such a long polynomial with algorithms, however - if he in fact does, approximately -2.7 is a root.

anonymous · Answer

Goodness, it could be C or D o.O

anonymous · Answer

exactly. It's a rather silly question if you ask me, because they don't exclude zero especially ... but C would be the most logical answer to me, it would take you approximately 30-50 minutes to solve this equation manually with algorithms, you can feed a computer with it anyway.

anonymous · Answer

Goodness, def not spending that long on a question -__- I have 60 of these..
But thank ou again, there's gonna be a lot more to come lol.