Question

find lcm of y^2-81, 9y+81

Answer 1

The multiples in y^2-81 are\[y^2-81=(y-9)(y+9)\]since this is a difference of two squares. The multiples of 9y+81 are\[9(y+9)\]You'll notice that the only multiple the two numbers (expressions) have in common is (y+9), so \[y+9\]is your LCM.

Answer 2

hey

Answer 3

hello

Answer 4

anyone here from Carnegie Mellon University?

Answer 5

:)

Answer 6

No, sorry.

Answer 7

no prob... just found this site randomly

Answer 8

haha, me too...

Answer 9

so, are you staff here? I mean you got this HERO status

Answer 10

no, not staff, just answered a lot of questions :)

Answer 11

alright, well, good luck :)
I just got one fan, even though I did not do anything or help anyone, strange :)

Answer 12

lol, take what you can get!

Answer 13

haha :) yeah.. i always take everything I can

Answer 14

alright guyz, i came, i saw, and now its time to leave, see you next time