Question

P(x)=x^2+2x^2-4x-5. How many negative zeros are in this polynomial function?

Answer 1

do you mean roots?

Answer 2

no square roots

Answer 3

2/3 - sqrt(19)/3 is your negative root

Answer 4

Just so you know @Diogo roots, solutions, zeros, all the same thing...

Answer 5

@Calcmathlete , here in portugal we call it "zeros". But i heard everyone here using the name root so i though it was a diferent thing.

To answer your question, there is one negative root in that polynomial

Answer 6

Can you tell me where it is?

Answer 7

Already did: 2/3 - sqrt(19)/3

Answer 8

My bad ... should be x^3 in stead of the 2 power

Answer 9

ohhh. That changes everything. Just a sec

Answer 10

It has 2 negative roots.


x = -1

OR

x = 1/2 (-1-sqrt(21)) ~ -2.79128784747792

Answer 11

I do not understand why you are squaring(roots) when I need zeros and multiplicities? You may be right on the number of zero of this function, but I am not sure.

Answer 12

Sorry. That english is too advanced for me. You better ask anyone else then.
But i am correct in one thing. Your polynomial has 2 negative roots