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buddhababy002

  • 2 years ago

Can someone help me with this equation? I'm trying but it's not coming out right.

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  1. buddhababy002
    • 2 years ago
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    Find an exact solution for Then, find the approximate solution.

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  2. satellite73
    • 2 years ago
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    start by "cross multiplying" to get \[2(\sqrt{5}-1)=\sqrt{5}x\]

  3. RyanL.
    • 2 years ago
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    \[x=\frac{2(\sqrt{5}-1)}{\sqrt{5}}\]

  4. satellite73
    • 2 years ago
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    \[2\sqrt{5}-2=\sqrt{5}x\] \[x=\frac{2\sqrt{5}-2}{\sqrt{5}}\]

  5. satellite73
    • 2 years ago
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    maybe you need to "rationalize the denominator" as well

  6. RyanL.
    • 2 years ago
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    multiply and divide. You just have to keep track of things. It's better when you put parentheses on things when you do this.

  7. buddhababy002
    • 2 years ago
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    okay, i'll try again..

  8. buddhababy002
    • 2 years ago
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    I'm still getting an answer thats not on my choice list.. :/

  9. nitz
    • 2 years ago
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    what are ur choices????

  10. buddhababy002
    • 2 years ago
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    a. 10-2 sqrt5/5; 1.1 b. 2-2sqrt5; -2.5 c. -2; 2 d. 2sqrt5-2/sqrt5; 1.1

  11. nitz
    • 2 years ago
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    ya its d

  12. buddhababy002
    • 2 years ago
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    can you explain how you did and it got that answer please?

  13. nitz
    • 2 years ago
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    see the first part of d has already been solved by satellite 73

  14. nitz
    • 2 years ago
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    for 1.1,you can simply put the value of sqrt(5) and solve....

  15. buddhababy002
    • 2 years ago
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    Oh i see.. lol ty

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