Question

f(x)=x^2-9

Answer 1

are you solving? factoring?

Answer 2

it said "Find the zero' :O

Answer 3

well first factor the equation : (x+3) (x-3)
Then set it equal to 0 and solve
it should be 3 and -3

The zeros are another way of saying "where does the graph cross the x-axis?"

Answer 4

Ohh Okay, Thank you (:

Answer 5

No Prob :P