Question

find domain of (x+4)/(X^2 -4)

Answer 1

every numbers without -2 and 2

Answer 2

how do i express that in interval notation i did figure that out haha...thanks

Answer 3

(x+4)/(x+2)(x-2)
\[D:x \neq2,-2\]
\[R: y \neq x\]

Answer 4

- infinite + infinite without -2 and +2

Answer 5

how would i express that in interval notation though, would it be: (-infinite, -2]U[2, infinite) ?

Answer 6

almost, (-infinite, -2)U(2, infinite)
-2] says that x can be equal to -2, which it cannot.

Answer 7

The domain in interval notation is \((-\infty,\infty)-\{-2,2\}\), or \((-\infty,-2) ∪ (-2,2)∪ (2,\infty)\).

Answer 8

ah i see...thank you

Answer 9

i also have a question posted about a cubed root, finding domain if anyone wishes to help ha..thanks though guys

Answer 10

put the good answer please for your help