Question

State any restrictions on the variables.

Answer 1

http://static.k12.com/bank_packages/files/media/mathml_77a10dbfe9187130be6ef2a473bf7db1eb112f4a_1.gif

Answer 2

A.
x ≠ 4

B.
x ≠ –4 and x ≠ 4

C.
x ≠ –4

D.
no restrictions are needed

Answer 3

\[x \neq \pm 4\]


The denominator cannot equal 0, so set it equal to zero to find the restrictions.
x^2 - 16 = 0
x^2 = 16
\[x = \sqrt{16}\]
x = 4, -4

Answer 4

thanks @Jackienvdm

Answer 5

No problem! (: