A polynomial f of degree 3 that has zeros at - 1 and 2 and has f (0) = 3

f (x) = (x+1) (x-2) (x-3/2)

Step-by-step explanation:

hello:

an polynomial f of degree 3 is : f (x) = (x+1) (x-2) (x-a)

f (0) = 3 means : (0+1) (0-2) (0-a) = 3

so : 2a=3 a=3/2

f (x) = (x+1) (x-2) (x-3/2)