Question

write a polynomial function in standard form with the given zeros. x=1,-1,-2 please give me the steps

Answer 1

work backwards from solving a polynomial for x, if a zero is 1 that means a factor is

(x-1)

-1 is a zero then (x+1) is a factor

and for -2

(x+2) is a factor

so expanding (x-1)(x+2)(x+1) will give you the polynomial

Answer 2

what else do i do i got stuck there

Answer 3

foil it out

Answer 4

i never heard of foil

Answer 5

Multiply it out, do you know how to multiply

(x-1)*(x+2)

Answer 6

yes

Answer 7

Ok do that, then multiply your answer by (x+1)

Answer 8

i multiplied x+1 and x+2 it gave me xˆ2+x+2

Answer 9

i need help multiply it by x-1

Answer 10

hello

Answer 11

2 should be negative

x^2+x-2

now take every term and multiply it by (x-1)

(x^2+x-2)(x-1)

Answer 12

why does 2 have to be negative

Answer 13

because -1*2=-2

Answer 14

ok thank you so much

Answer 15

Now what do you get when you multiply

(x^2+x-2)(x-1)

Answer 16

i got xˆ3+0-3+2 i think i got it wrong