## Spartan_Of_Ares 2 years ago can some one help me with 6 rational expressions?

1. Spartan_Of_Ares

$\frac{3}{ z-4 }+\frac{6 }{ z+3 }$

2. Spartan_Of_Ares

what?

3. Hero

@Spartan_Of_Ares, I could have sworn I showed you how to simplify rational expressions.

4. jevans17

5. Spartan_Of_Ares

i wanted to know if i did this right

6. jevans17

spartan

7. Spartan_Of_Ares

yes

8. jevans17

whats the thing is

9. Hero

10. Spartan_Of_Ares

first i got $\frac{ 3 }{ z-4 }$$\frac{ z+18 }{ (z+3)^2 }$ when multiplying

11. Spartan_Of_Ares

that came out wrong and jevans i have no clue what your talking about

12. Hero

13. jevans17

no my problem is not an equation

14. Spartan_Of_Ares

my teacher was sick today and we didn't really cover this

15. Hero

Well, you should wait until tomorrow and ask her.

16. Spartan_Of_Ares

$\frac{ 3 }{ z-4 }+\frac{ z+18 }{ (z+3)^2 }$ this is how it came out i dont have her again until next tuesday

17. Hero

That's not what you're supposed to do.

18. Spartan_Of_Ares

19. Hero

You're supposed to do this: $\frac{3}{z-4} \times 1 + \frac{6}{z + 3} \times 1$ $\left(\frac{3}{z-4} \times \frac{z+3}{z+3}\right) + \left(\frac{6}{z+3} \times \frac{z-4}{z-4}\right)$

20. jevans17

heroo help me man

21. jevans17

help me

22. Hero

23. jevans17

i have none i really need help

24. Hero

I can't help fifteen people all at once.

25. jevans17

pelase help me rea quick sir please

26. Hero

I still don't understand why you refuse to post your own question

27. jevans17

thats my question sir its thee same

28. Spartan_Of_Ares

$i got \frac{ 3z+9 }{ z^2-12 }+\frac{ 6z-24 }{ z^2-12 }$

29. Spartan_Of_Ares

:{

30. jevans17

lol he dumb

31. Hero

@jevans17, go to your own question

32. jevans17

hero it is my own question its the same question

33. Hero

@Spartan_Of_Ares, you got the numerators correct.

34. Spartan_Of_Ares

on a scale of 1-10 how badly did i do that?

35. jevans17

real bacl a 10

36. jevans17

F

37. Hero

The denominators need work. See if you can understand this: $(z - 4)(z + 3) = z(z + 3) - 4(z + 3) = z^2 + 3z - 4z - 12 = z^2 - z - 12$

38. jevans17

Hero help me pelase i dont have all day

39. Spartan_Of_Ares

GTFO!!

40. Hero

$\space\space\space\space\space(z - 4)(z + 3) \\= z(z + 3) - 4(z + 3) \\= z^2 + 3z - 4z - 12 \\= z^2 - z - 12$

41. jevans17

Ares shut the f up and learn to multiply

42. Hero

@Spartan_Of_Ares, do you understand what I am posting?

43. Spartan_Of_Ares

yes i just didnt understand how you were getting a trinomial but that make sense

44. jevans17

Hero how do i get someone else who can help me cause your no help at all

45. Spartan_Of_Ares

46. Hero

@jevans17, I refuse to help someone who infiltrates someone else's question.

47. jevans17

I posted my own

48. Spartan_Of_Ares

ok so now ill have $\frac{ 9z-15 }{z^2-z-12 }$ right?

49. karatechopper

@jevans17 Please refrain from posting your question inside someone else's question. That is just plain Disrespectful.

50. Spartan_Of_Ares

did i combine it right?

51. Spartan_Of_Ares

52. Spartan_Of_Ares

(っ⌒‿⌒)っ is it the final answer?(っ⌒‿⌒)っ

53. Hero

It is correct. That's why I gave you a medal

54. Spartan_Of_Ares

55. Hero

Yes, that is it bro. Remember: (z - 4)(z + 3) = z^2 - z - 12

56. Spartan_Of_Ares

ok thanks for the help

57. Spartan_Of_Ares

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58. Spartan_Of_Ares

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