Question

Simplify the sum.

Answer 1

You Have\[\frac{4}{m + 9} + \frac{5}{m^2 - 81}\] We can factor the denominator to get:\[\frac{4}{m+9} + \frac{5}{(m+9)(m - 9)}\]

This should get you started. Do you know what to do next from here @cmenendez55

Answer 2

NO I DNT UNDERSTAND THE PROBLEM LOL

Answer 3

In order to add fractions the denominators of both fractions must be the same.

Answer 4

ok

Answer 5

For example if we had

\[\frac{2}{3} + \frac{3}{4}\] We cannot add them just yet. We have to find a common denominator before adding them.

Answer 6

yes that right

Answer 7

What we can do is multiply the first fraction by 4/4 and the second fraction by 3/3. Then we would have

\[\frac{8}{12} + \frac{9}{12}\]

Answer 8

Then we would be able to add them.

Answer 9

For your problem, we could multiply the first fraction by something so that the denominators match. What do you think we could multiply the first fraction by?

Answer 10

2