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marcelie

  • one year ago

How do i solve this question ? 1/x+1/1/x+4

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  1. marcelie
    • one year ago
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    |dw:1441526787986:dw|

  2. hartnn
    • one year ago
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    thats an expression, not an equation :) that can be simplified. try multiplying x to each term in numerator and denominator

  3. marcelie
    • one year ago
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    can you please draw it out ?

  4. hartnn
    • one year ago
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    |dw:1441527060356:dw|

  5. marcelie
    • one year ago
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    why is it x ? how do i rationalize the denominator ?

  6. hartnn
    • one year ago
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    |dw:1441527099234:dw|

  7. hartnn
    • one year ago
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    we're just simplifying the expression, unless we know whether x is rational or not, we can't say whether denominator is rational or not... why is it x?? i see 1/x in the expression, to simplify it, i wanted to multiply it with x but then i need to multiply everything with x to balance things out

  8. marcelie
    • one year ago
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    i get that part. but why does it multiply by x ?

  9. marcelie
    • one year ago
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    ah okay. i thought i had to simplify the whole denominator

  10. hartnn
    • one year ago
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    |dw:1441527313797:dw|

  11. marcelie
    • one year ago
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    are there any similar problems like that one ?

  12. hartnn
    • one year ago
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    need any more help with this question ?

  13. marcelie
    • one year ago
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    yes. so we multiply x because its missing an x ? on top and bottom ?

  14. radar
    • one year ago
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    |dw:1441572290655:dw|

  15. radar
    • one year ago
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    Guess not.

  16. marcelie
    • one year ago
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    yes it was an expression .

  17. marcelie
    • one year ago
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    i have to plug in f(x) and g(x) but i did that step

  18. radar
    • one year ago
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    |dw:1441592776733:dw|

  19. marcelie
    • one year ago
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    does the order matter ? the answer is 1+x/x+4

  20. radar
    • one year ago
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    Order does matter, if the problem is as I wrote it, that is the fraction 1/(x + 1) is divided by the fraction 1/(x+4) you invert the divisor and proceed as is multiplication, Doing this results in what I have posted.

  21. marcelie
    • one year ago
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    ah okay. Thank you !!!

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