Question

I can't remember how to do this. I need help with this.

How many roots do the functions have in common?
f(x)=x^2-9

f and g share same roots?
f and g share one root in common but each have another root not shared?
f and g share no roots in common​

Answer 1

f and g share no roots in common

Explanation:

The roots of
`f(x)=0` are
`x=\pm 3`.

From the graph, the roots of
`g(x)=0` are where the graph of
`g(x)` intersects the
`x` axis, which are at
`x=2, 10`.