Question

HELP!
Which sum is equal to x^2+6x-5/x^2-25 ?

Answer 1

do you have choices? this is not a sum, i think they want you to factor and cancel

Answer 2

maybe it is
\[\frac{x^2+6x+5}{x^2-25}\]?

Answer 3

Or maybe using partial fraction composition? Sums of quotients?

Answer 4

But yes, reads more like a problem where you factor and cancel.

Answer 5

considering the other problems, i doubt that this is partial fractions

Answer 6

but nothing cancels in any case, so i am not sure what to do with this one

Answer 7

A. 1/x+5 + x+5/x-5
B. 1/x+5 + x/x-5
C. 1/x+5 + x^2/x+5
D. 1/x-5 + x/x+5

Answer 8

that would be partial fractions

Answer 9

Which one of those are equal to x^2+6x-5/x^2-25 ?

Answer 10

i guess we have to add all of them and see what we get, because i am sure you do not know partial fraction decomposition
unless i am wrong

Answer 11

your right. ha

Answer 12

oh good, I wont post that then (-:

Answer 13

\[\frac{1}{x+5} + \frac{x+5}{x-5}\]
\[=\frac{x-5+(x+5)(x+5)}{x^2-25}\]
\[=\frac{x^2+10x+25+x-5}{x^2-25}\]
\[=\frac{x^2+11x+20}{x^2-25}\] nope

Answer 14

try the next one (it works)

Answer 15

Okay!