Question

how to add sqrt2+x and sqrt2-x together?
Thanks

Answer 1

\[\sqrt{2+x} and \sqrt{2-x}\]

Answer 2

Can't add them. The radicands are not the same.

Answer 3

then how am i supposed to graph it. because the question ask to graph the first, then the second one, then the graph of both of them adding together :[

Answer 4

That would be by adding the graphs together.

Answer 5

hmm, then i don't know how.

Answer 6

Did you graph the two equations?

Answer 7

i know how to graph the two, but I don't know how to make the third graph

Answer 8

ok. Here is an example. If you graph
\[y=\sqrt{x+2}\]
it will contain the point (2,2)
if you graph
\[y=\sqrt{x-2}\]
it will contain the point (2,0)
So the sum function will contain the point (2, 2+0)

Answer 9

im still confused how did they have the answer

Answer 10

I want to know how to graph if there is no calculator allowed

Answer 11

Plot some ordered pairs.