Question

What are the excluded values?
2
_________
x(x-3)

a) x = 0 and 3
b) x = 0 and 2
c) x = -3 and 3
c) none of the above

Answer 1

0 3

Answer 2

What values of "x" make the bottom = 0? We need to throw out those values because it is against the law to divide by 0.... I think the penalty is a small fine :)

When we multiply 2 number together, they equal (0) when either of the numbers is (0)

2(0) = 0; 5(0) = 0; 129(0)=0

So, x(x-3) cannot be x(0) OR 0(x-3)

x cannot be 0 and x cannot be 3

Both of these values produce a (0), and any number times (0) equals (0)