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anonymous

  • one year ago

dont know where to start, help please! will fan and medal! (2 questions)

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  1. anonymous
    • one year ago
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    Which of the following expressions are equivalent? Justify your reasoning.

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  2. anonymous
    • one year ago
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    this is on a con nexus test

  3. anonymous
    • one year ago
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    @Icedragon50 cool? i dont even know what that is

  4. zeesbrat3
    • one year ago
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    Hello.

  5. anonymous
    • one year ago
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    @zeesbrat3 Hi! think you can help?

  6. zeesbrat3
    • one year ago
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    Yes. When the exponent to a variable is negative, you find the reciprocal. Making B x

  7. zeesbrat3
    • one year ago
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    Does that make sense?

  8. anonymous
    • one year ago
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    Yeah, I think I understand.

  9. anonymous
    • one year ago
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    The -1 turns positive, right?

  10. anonymous
    • one year ago
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    then isn't it x^1/1?

  11. zeesbrat3
    • one year ago
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    Yes which is?

  12. anonymous
    • one year ago
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    OH I see

  13. anonymous
    • one year ago
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    wow, okay. so it's divide by 1, which make it just x^1 and x^1 is just x, right?

  14. zeesbrat3
    • one year ago
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    Yep! Good job

  15. zeesbrat3
    • one year ago
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    Now, you have to simplify the rest of the options to figure out which is equivalent. Once they are all simplified, it is easy to tell.

  16. zeesbrat3
    • one year ago
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    For C and D, you have to remember that when exponents are multiplied together, you add. When they are divided by each other you subtract. Since A is already simplified, you dont have to worry about that just yet.

  17. anonymous
    • one year ago
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    Alright then

  18. zeesbrat3
    • one year ago
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    So what did you get for C?

  19. anonymous
    • one year ago
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    is d also just x then?

  20. zeesbrat3
    • one year ago
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    Why is D x?

  21. anonymous
    • one year ago
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    because the exponents add up to 3/3, which is 1 right? or am i missing something

  22. zeesbrat3
    • one year ago
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    No you are correct, I was just making sure you knew why.

  23. anonymous
    • one year ago
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    Oh, thank you! So then it's x^1, (or just x) :D right??

  24. zeesbrat3
    • one year ago
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    Yep

  25. anonymous
    • one year ago
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    I'll still try the others, since it's just good to know how to do them. For future reference. If that's alright, could you make sure I get it right?

  26. zeesbrat3
    • one year ago
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    Sure

  27. anonymous
    • one year ago
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    I'll try to simplify C

  28. anonymous
    • one year ago
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    so x^11

  29. zeesbrat3
    • one year ago
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    Well, not quite. There is the radical to consider

  30. anonymous
    • one year ago
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    \[\sqrt[10]{x^{11}}\] like that ?

  31. zeesbrat3
    • one year ago
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    Perfect!

  32. anonymous
    • one year ago
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    im not sure what to do with the radical... or is that all i can do to simplify?

  33. zeesbrat3
    • one year ago
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    Well, since it is technically x^10 * x^1, you can take the 10 out but it still wouldnt be equivalent to B.

  34. anonymous
    • one year ago
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    hm, alright then.. how about A then? can i do anything with that?

  35. zeesbrat3
    • one year ago
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    It's already simplified

  36. anonymous
    • one year ago
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    Right. So then I guess I have my answer. Thank you so much for all of your help, it's really appreciated!

  37. zeesbrat3
    • one year ago
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    You're welcome

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