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January 25th, 2010, 02:25 PM   #1
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need help with laws of indices

my book says to remove the brackets from (x3 y7)4

(x to the power of 3, y to the power of 7, and to the power of four outside the brackets, all numerals small)

Can anyone help?
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January 25th, 2010, 03:17 PM   #2
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Multiply exponents. To illustrate, (x) = ((x)(x)(x)) = ((x)(x)(x))((x)(x)(x)) = x^6.
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