2007-08-01 14:14:29 · 5 answers · asked by Jacesmom 2 in Science & Mathematics ➔ Mathematics
Hi,
x² - 36
---------
6 - x
Factor the numerator. It is the difference of perfect squares.
(x - 6)(x + 6)
----------------
6 - x
Notice the factor (x - 6) on top and 6 - x on the bottom. They are opposite factors because each term has the opposite sign from what the other one has. These opposite factors cancel and leave a "1" behind one place and a "-1" behind the other place.
(x - 6)(x + 6)
---------------- =
6 - x
-1(x + 6)
------------ = -x - 6 <== answer
1
I hope this helps!! :-)
2007-08-01 14:18:17 · answer #1 · answered by Pi R Squared 7 · 0⤊ 0⤋
(x^2-36) / (6-x) =
(x+6)(x-6) / (6-x) =
-(x+6)(6-x) / (6-x) =
-(x+6) =
-x-6
2007-08-01 21:19:19 · answer #2 · answered by Steve A 7 · 1⤊ 0⤋
(x-6)(x+6)/[(-1)(x-6)] = -(x+6) or -x-6.
2007-08-01 21:19:45 · answer #3 · answered by Steven R 1 · 0⤊ 0⤋
x^2-36/(6-x)
=(x)^2-(6)^2/-(x-6)
=(x+6)(x-6)/-(x-6)
=-(x+6)
= -x-6
2007-08-01 21:20:01 · answer #4 · answered by moona 4 · 2⤊ 0⤋
It's coca
2007-08-01 21:27:32 · answer #5 · answered by Anonymous · 0⤊ 0⤋