document.write( "Question 1189912: If n is a positive integer, and 2^n + 2^n+1 = k, what is 2^n+2 in terms of k? \n" ); document.write( "
Algebra.Com's Answer #821417 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "If n is a positive integer, and 2^n + 2^(n+1) = k, what is 2^n+2 in terms of k?
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document.write( "If \"2%5En+%2B+2%5E%28n%2B1%29\" = k, it means that\r\n" );
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document.write( "    \"2%5En+%2B+2%2A2%5En\" = k\r\n" );
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document.write( "or\r\n" );
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document.write( "    \"3%2A2%5En\" = k\r\n" );
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document.write( "    \"2%5En\" = \"k%2F3\".\r\n" );
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document.write( "Hence,  \"2%5E%28n%2B2%29\" = \"4%2A2%5En\" = \"%284%2F3%29k\".    ANSWER\r\n" );
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