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Last edited by Revelsyn; Oct 13th 2008 at 07:17 AM.
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Originally Posted by Revelsyn I'm having some trouble with this one; I'm not sure how to multiply the neg n by the exponent "1 + n" "evaluate." 2-n(2n - 21+n) ~everything in red is an exponent/the answer is suposed to be -1.. when multiplying numbers of the same base, we add the powers. that is, $\displaystyle \displaystyle x^a \times x^b = x^{a + b}$ Note, $\displaystyle 2^{-n} \left( 2^n - 2^{1 + n} \right) = 2^{-n} \cdot 2^n - 2^{-n} \cdot 2^{1 + n}$ Now continue using the rule above
Last edited by Revelsyn; Oct 13th 2008 at 07:16 AM.
Didn't we see this before?
Originally Posted by Krizalid Didn't we see this before? It does look remarkably familiar doesn't it? Revelsyn, if you have questions about an answer to your question, you should post it in the original thread. -Dan
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