Question

Find the polynomial function with roots 1, –2, and 5

Answer 1

f(x)=(x-1)(x+2)(x-5) Multiply those three factors and you will have your polynomial function. Can you complete that?

Answer 2

yes thts the only thing i have trouble with is getting it started

Answer 3

I will start you by multiplying the first two: (x-1)(x+2):\[x ^{2}+x-2\]Now do the \[(x ^{2}+x-2)(x-5)\]

Answer 4

got it now thanks

Answer 5

This can be done the old fashion way:
\[x ^{2}+x-2\] \[ x-5\]----------------