Question

PLEASE HELP.

Answer 1

\[f(x) =\sqrt{x+2}\]
\[g(x) =\sqrt{4-x}\]

a. f+g
b. f-g
c. f*g
d. f/g

Answer 2

f+g means "join them by addition"
so \[\large f+g = \sqrt{x+2}+\sqrt{4-x}\]

Answer 3

That's all I have to do?

Answer 4

yup.

Answer 5

in (c) and (d), if you have to combine under one radical sign, follow this
\[\sqrt A \cdot \sqrt B= \sqrt{A\cdot B}\\\frac{\sqrt A}{\sqrt B}=\sqrt{\frac{A}{B}}\]