Question

Which of the following is a polynomial with roots -2, -3, and 3 ?

Answer 1

where is the polynomials?

Answer 2

Which of the following is a polynomial with roots -2, -3, and 3 ?

x3 + 4x2 + 9x + 24
x3 - 4x2 + 9x - 24
x3 + 2x2 + 9x + 18
x3 - 2x2 + 9x - 18

Answer 3

well u can use a calculator if u can

Answer 4

can u show me ?? ples help

Answer 5

so if we want to find it manually, we have to substitute the opposite value of root, let me show you.
roots meaning (x-2) (x-3) (x+3) from what was given, this is in (x+a) form.
we just have to substitute the opposite sign of the a value to each equation and find which one is equal to zero.
say we want to try x-2 we substitute x=2 into the any of the equations, if it does not equal zero it is not a factor.

Answer 6

put the values in every polynomial

Answer 7

@TheViper is there any other faster way?

Answer 8

wait

Answer 9

yes @JayDS ;)

Answer 10

the polynomial will be :-
[x-(-2)][x-(-3)][x-(3)]

Answer 11

k, cause I thought there is but I just couldn't think of it so I asked u, please tell @nhatnguyen and I would like to know as well.

Answer 12

=(x+2)(x+3)(x-3)

Answer 13

one question, how do you know that they aren't raised to the power of 2,3 or so on?