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mollyann

  • 3 years ago

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  1. mollyann
    • 3 years ago
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  2. ChmE
    • 3 years ago
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    You need to find 2 numbers whose product totals 128. One of the numbers needs to be a perfect square so we can simplify it.

  3. ChmE
    • 3 years ago
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    I ways like to divide it by 2 first to see if 2 and the other number will work. Good place to start

  4. ChmE
    • 3 years ago
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    2 times 64 = 128, Hey look.. 64 is a perfect square!!

  5. ChmE
    • 3 years ago
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    \[\sqrt{128}=\sqrt{2 \times 64}=\sqrt{2}\sqrt{64}=8\sqrt{2}\]

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