Answers

2016-07-17T15:15:12+08:00
X²-y²
=(x+y) (x-y)
Checking:
x²-xy+xy- y²
= x²-y²
0
which one is the answer
which one is the answer
The answer is (x+y) (x-y). I used the factoring method
2016-07-17T17:28:30+08:00
(x-y) times (x plus y)




0
You could use the app Photomath available on android and apple
This app is color red and white with a x and something