Question

how do you factor (e^x/2+e^-x/2) (e^x/2+e^-x/2)

Answer 1

you could take out an e^-x/2

Answer 2

how?

Answer 3

Get rid of the negative exponent.

Answer 4

oh no i just realized i typed "factor" on accident its suppose to foil not factor....

Answer 5

That IS a different can of worms. Still,, eliminate the negative exponents.

Answer 6

oh why do you eliminate them?

Answer 7

You don't have to, it just makes things easier
\[(\frac{ e ^{x} }{ 2 }+\frac{ 1 }{ 2e ^{x} })^{2}\]