if x=-1 and x=2 are zeros of f(x)=3x^3 +Ax^2+Bx+2, Then the value of A+B is
A)-1 B)1 C)-9 D)9 E) cannot be determined please explain

Question

amistre64 · Answer

you have 2 equations in 2 unknowns ...

anonymous · Answer

?

anonymous · Answer

idk how to go about solving this

amistre64 · Answer

let x=-1 and set it equal to zero
let x=2 and set it equal to zero

you then have 2 equations, and 2 unknowns

amistre64 · Answer

its a substitution, elimination, or whatever method you feel comfortable with to solve the system

anonymous · Answer

AH

anonymous · Answer

substituion thank you

amistre64 · Answer

youre welcome

anonymous · Answer

i neda  a page with all the things i can do wiyth equations

amistre64 · Answer

all the things ... hmm, not really sure what that would look like

anonymous · Answer

summer break makes me forget my abilities ic an do with algebra

amistre64 · Answer

lol

anonymous · Answer

i need a good alg 2 backgroud for calc

amistre64 · Answer

yeah, the hardest thing about the calcs is algebra