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standard form problem watch

1. 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?
2. Square the whole thing - Hint: A power multiplied by 2 (Squared) is multiplying the power by two. Eg. (9^2)^2 = 9^4
3. (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?
4. 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?
5. (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
6. {1.2 x 10-8}2

= 1.22 x {10-8}2

= 1.44 x 10-16

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