Question

f(x)=x^4-6x^3+7x^2-8x-42 Use substitution to determine whether 3 is a zero of the function. Yes or No multiple choice. :)

Answer 1

so do it. replace x by 3 and see what you get!

Answer 2

i get -84 but i used a calculator and could be wrong

Answer 3

im getting -84

Answer 4

then the answer is no, since -84 is not zero

Answer 5

that simple?!

Answer 6

here is zero.

Answer 7

yes that simple... next

Answer 8

HAHA i literally just about fell out of my chair.. lolol

Answer 9

wait its askin if 3 is a zero of f(x), still a no