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

x3 – 4x2 + 4x – 16

x3 + 4x2 + 4x + 16

x3 + 2x2 + 4x + 8

x3 – 2x2 + 4x – 8

Question

Which of the following is a polynomial with roots –2, –2, and 2 ?

 x3 – 4x2 + 4x – 16

 x3 + 4x2 + 4x + 16

 x3 + 2x2 + 4x + 8

 x3 – 2x2 + 4x – 8

anonymous · Answer

somebodyyy helpppppp!

anonymous · Answer

which one can be written as (x+2)(x+2)(x-2)?

anonymous · Answer

idkkk ? im horrible in mathhh! ): and im just trying to pass this test so that i can graduate next year!

anonymous · Answer

are you sure that the last one is +4x not -4x?

anonymous · Answer

nope they are all +4x

swissgirl · Answer

Well I would suggest is trying to factor each option which can be super annoying.
So maybe lets try to factor the the first and the third option

anonymous · Answer

hmm,its none of the above

swissgirl · Answer

but it has to be. let me solve one

anonymous · Answer

okay 
thanks so much

anonymous · Answer

is it the last one?

swissgirl · Answer

Well not really. Its none of them

swissgirl · Answer

Now i first plugged in all the

swissgirl · Answer

the 2 and -2 into each equation and there wasnt one equation that for both values it turned out to be 0, So then I graphed the equations and none of them touched the x axis at both 2 and -2 It was either one or the other

anonymous · Answer

okay thanks i got that question right!

swissgirl · Answer

That is quite weird lol