document.write( "Question 736118: Simplify the expression. Assume that the variables represent non-zero numbers:\r
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Algebra.Com's Answer #456733 by tommyt3rd(5050)\"\" \"About 
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\"%0D%0A-7r%5E4%28r%5E4%29%5E3=-7r%5E%284%2B4%2A3%29=-7r%5E16%0D%0A\" \n" ); document.write( "
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