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anonymous

  • 5 years ago

Amistre64 I don't get it! How do you get x=1 from that? I get x-1=x^2 and get stuck there. Help!

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  1. amistre64
    • 5 years ago
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    -1 1 --- + --- = 0 ; how do we add fractions? we got to get them x*x x wearing the same pants otherwise they wont sit nice together right?

  2. amistre64
    • 5 years ago
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    we want to re dress that left one to match; we do that by multiplying it by a useful form of 1; lets use x/x

  3. amistre64
    • 5 years ago
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    -1 1(x) --- + ---- = 0 now we can add them x*x x(x)

  4. amistre64
    • 5 years ago
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    -1 + x ------ = 0 ; well, a fraction only = 0 when the top part is 0 x*x

  5. amistre64
    • 5 years ago
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    sooo: -1+x =0 ; +1 to each side x = 1

  6. anonymous
    • 5 years ago
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    oh my gosh! ok, i get that part where you said that a fraction can only = 0 when the numerator = 0. DUH, dumb me, I was trying to solve for x and you can't in the traditional way, can you?

  7. amistre64
    • 5 years ago
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    lol..... im gonna go out on a limb and say that that was the traditional way :)

  8. anonymous
    • 5 years ago
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    you kill me! Thank you again...now, back to calculus! If I can't get through the algebra in this, I am in big trouble, huh? ; )

  9. amistre64
    • 5 years ago
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    if you want to add an extra 'cross multiply' thats fine; then: -1+x = 0(x^2) -1 +x = 0

  10. anonymous
    • 5 years ago
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    Thanks again and hope you will be around for awhile! Maybe not just tonight but for the remainder of my calculus courses which is for the next 12 weeks!

  11. amistre64
    • 5 years ago
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    :) if not me; then there are smarter than mes all over the place ;)

  12. anonymous
    • 5 years ago
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    Maybe but you speak my language and not the language of mathspeak. THAT I don't get. I come here looking first for you, and you always seem to be here, so I'm sure I'll talk to you soon! Have a great night in Florida!

  13. amistre64
    • 5 years ago
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    thnx :) U2

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