Question

given a polynomial f(x) if (x+3) is a factor what else must be true?
f(3)=0
f(-3)=0
f(0)=3
f(0)=-3

Answer 1

i was thinking a

Answer 2

Remainder theorem:
The remainder of f(x) divided by f(x-a) equals f(a)

Answer 3

nope :/

Answer 4

f(-3) =0 would be that (-3)+3=0 what f(-3) means plug in -3 for x into f(x)=x+3

Answer 5

but close

Answer 6

ohh ok so b

Answer 7

undead, but 3+0 =0?