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    when squaring a number in standard form, do you square the whole thing or just the number at the beginning

    for example:

    R = X^2 / Y

    X = 3.8 X 10^5
    Y = 5.9 X 10^4

    would I square just the 3.8 or te 10^5 as well?
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    Square the whole thing - Hint: A power multiplied by 2 (Squared) is multiplying the power by two. Eg. (9^2)^2 = 9^4
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    (Original post by jsk800)
    Square the whole thing - Hint: A power multiplied by 2 (Squared) is multiplying the power by two. Eg. (9^2)^2 = 9^4
    okay so something to the power of 5 squared would be to the power of 10 because you almost just adding because you are timesing by another 5?
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    Erm for example 2^5 sqaured ( (2^5)^2) = 2^10.

    If it were 5 x 2^5 sqaured, it would be 25 x 2^10

    (Original post by Ellis North-Fox)
    okay so something to the power of 5 squared would be to the power of 10 because you almost just adding because you are timesing by another 5?
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    (Original post by jsk800)
    Erm for example 2^5 sqaured ( (2^5)^2) = 2^10.

    If it were 5 x 2^5 sqaured, it would be 25 x 2^10
    okay thanks
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    {1.2 x 10-8}2

    = 1.22 x {10-8}2

    = 1.44 x 10-16
 
 
 
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