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Girl_Ninja

  • 3 years ago

What is the product of the radical expression?

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  1. Girl_Ninja
    • 3 years ago
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  2. Girl_Ninja
    • 3 years ago
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    |dw:1354637266918:dw|

  3. richyw
    • 3 years ago
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    b

  4. Girl_Ninja
    • 3 years ago
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    thanks and could you tell me how

  5. richyw
    • 3 years ago
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    yup i was doing that

  6. Girl_Ninja
    • 3 years ago
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    ok

  7. richyw
    • 3 years ago
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    oops, not b haha just a sec. just woke up haha

  8. Girl_Ninja
    • 3 years ago
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    lol ok

  9. richyw
    • 3 years ago
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    it's -8

  10. richyw
    • 3 years ago
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    remember that \((a+b)(a-b)=a^2-b^2\)

  11. Girl_Ninja
    • 3 years ago
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    o ok

  12. richyw
    • 3 years ago
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    so you have \(\sqrt{2}^2-\sqrt{10}^2=10-2=-8\)

  13. Girl_Ninja
    • 3 years ago
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    o wow I totally get it now thanks alot

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