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mckayla_04

  • 4 years ago

what is (3 raidcal 5 +1) (2 radical 5 -3) ??

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  1. mckayla_04
    • 4 years ago
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    answers;; 33 - 11 raidcal 5 27 - 7 radical 5 33 - 11 radical 5 27 - 7 raidcal 5

  2. philips13
    • 4 years ago
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    can you multiply it out?

  3. philips13
    • 4 years ago
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    |dw:1333196161836:dw|

  4. mckayla_04
    • 4 years ago
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    yes

  5. philips13
    • 4 years ago
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    so the problem is simplifying? ok, what do you have so far?

  6. Callisto
    • 4 years ago
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    \[(3\sqrt{5}+1)(2\sqrt{5}-3)\]\[=(3\sqrt{5})(2\sqrt{5}-3)+(1)(2\sqrt{5}-3)\]\[=(3\sqrt{5})(2\sqrt{5})-(3\sqrt{5})(3)+(2\sqrt{5}-3)\]\[=(3\times 2\times\sqrt{5^2})-(3\times 3\sqrt{5}) + 2\sqrt{5}-3\]\[=6\times 5-9\sqrt{5} + 2\sqrt{5}-3\]\[=30-3-9\sqrt{5} + 2\sqrt{5}\] Can you simplify it?

  7. Rohangrr
    • 4 years ago
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    good ques but i cant answer it !! too sorry !!

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