Question

Which values from below aren't in the doamin of f(x)=((x^2+2x)/(x^2-9))
-1,-3,-2,0,1,2,3

Answer 1

the values which make the denominator =0 will not be in the domain.

Answer 2

so, solve for x^2-9=0

Answer 3

3

Answer 4

and ?

Answer 5

0

Answer 6

how 0 ?

Answer 7

0^2-9 will not be =0

Answer 8

sorry 3

Answer 9

hit the wrong number

Answer 10

x^2-9 = 0
(x+3)(x-3)=0
x+3 =0 , x-3=0
x=..., x=.....

Answer 11

one of the number is 3 is correct, oter ?

Answer 12

x=3 and x=-3

Answer 13

now its correct :)

Answer 14

thank you

Answer 15

welcome ^_^