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Beautiful_Lier96

  • 3 years ago

can someone help... 1. (7)/(1-√3) A. -(7-7√2)/(2 B. -(7+7√2)/(2) C. (4+6√3)/(3) D (2+7√3)/(2)

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  1. niksva
    • 3 years ago
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    @Beautiful_lier96 do u know how to rationalize?

  2. Beautiful_Lier96
    • 3 years ago
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    kinda..

  3. Beautiful_Lier96
    • 3 years ago
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    @niksva i know the bottom number is -2

  4. niksva
    • 3 years ago
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    u r right what do u get in numerator?

  5. Beautiful_Lier96
    • 3 years ago
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    umm 7+√3..... so im guessing it would be letter B

  6. niksva
    • 3 years ago
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    check again u will get { 7+ 7 sqrt(3) }

  7. Beautiful_Lier96
    • 3 years ago
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    how ? n the answer isnt b ?

  8. niksva
    • 3 years ago
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    i think there is something wrong in the options it cant be b

  9. geerky42
    • 3 years ago
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    \[\dfrac{7}{1-\sqrt3} = \dfrac{7}{1-\sqrt3} \cdot \dfrac{1+\sqrt3}{1+\sqrt3} \]

  10. Beautiful_Lier96
    • 3 years ago
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    the answer choice for d is (2+7√3)/2

  11. niksva
    • 3 years ago
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    it cannot be d

  12. geerky42
    • 3 years ago
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    It is B, but instead of √2, it should be √3 Perhaps it's a typo?

  13. niksva
    • 3 years ago
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    I think, by mistake, someone has wrote sqrt(2) in options a and b in place of sqrt(3)

  14. geerky42
    • 3 years ago
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    \(\Huge \text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\text{^}\)

  15. niksva
    • 3 years ago
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    according to me , answer is - (7+7√3)/2

  16. geerky42
    • 3 years ago
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    Same here.

  17. Beautiful_Lier96
    • 3 years ago
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    i just put it as be. can you help with another question or 2 ? 1. (5√32)-(7√8) A. 4√2 B. 3√2 C. 6√3 D. 6√2 2. (2√15xy³)(3√30x³y²) A. 4x²y³√5xy B. 3x²√2y C. 90x²y²√2y D. x²y²√xy

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