## anonymous 5 years ago wait why did you factor out a y?

1. amistre64

to show you that they can be added

2. anonymous

Hmmm im still confused lol..

3. amistre64

i went from one point to another using albegraic techniques to prove my point lol

4. amistre64

what happens when we factor out an x? x(y+y) = x(2y) = 2xy ; same result xy + yx = 2xy

5. anonymous

ohh ok i got it. so it doesnt matter what order its in

6. amistre64

nope; doesnt matter

7. anonymous

$3\times 7 = 7 \times 3$ so $3 \times 7 + 7 \times 3 = 2\times 7 \times 3$ in other words there is no difference between xy and yx so you can add them.

8. anonymous

ok because my real question is can you add sinxcox+cosxsinx?

9. amistre64

yes

10. amistre64

2sincos

11. anonymous

Figured ok. thanks are you a student or a teacher?

12. amistre64

im studying to be a teacher :)

13. anonymous

omg thats cool i would like to be a teacher myself. good idea for practice