document.write( "Question 95098: I don't understand how to simplify this question:\r
\n" ); document.write( "\n" ); document.write( "(16 raised to the negative 1 power, \"x\" raised to the negative 4th power, \"y\" raised to the possitive 12th power) This whole problem is in parenthesis. Outside of the parenthesis, the entire problem is raisd to negative 3/4.\r
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\n" ); document.write( "\n" ); document.write( "I hope this makes sense.\r
\n" ); document.write( "\n" ); document.write( "So I think it should be written as:\r
\n" ); document.write( "\n" ); document.write( "(16^-1 x^-4 y^12)^-3/4 \r
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Algebra.Com's Answer #69300 by bucky(2189)\"\" \"About 
You can put this solution on YOUR website!
Given:
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\n" ); document.write( "\"%28%2816%5E%28-1%29%29%28+x%5E%28-4%29+%29%28y%5E12%29%29%5E%28-3%2F4%29+\"
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\n" ); document.write( "By the power rule of exponents you multiply each of the exponents inside the parentheses
\n" ); document.write( "by the \"-3%2F4\".
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\n" ); document.write( "When you do that the problem becomes:
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\n" ); document.write( "Note ... for some reason the 3 in the numerator of each multiplication gets clipped off.
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\n" ); document.write( "Do the multiplication by \"-3%2F4\" in each of the exponents and you get:
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\n" ); document.write( "\"%28%2816%5E%283%2F4%29%29%2A%28+x%5E%283%29%29%2A%28y%5E%28-9%29%29%29\"
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\n" ); document.write( "At this point, let's just focus on \"16%5E%283%2F4%29\". We can work the power rule in reverse and
\n" ); document.write( "get two different forms of this as follows:
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\n" ); document.write( "Either \"%2816%5E%281%2F4%29%29%5E3\" or \"%2816%5E3%29%5E%281%2F4%29%29\"
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\n" ); document.write( "Applying the power rule to either of these gets you back to \"16%5E%283%2F4%29\".
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\n" ); document.write( "So to evaluate this term we can either find the fourth root of 16 and cube it, or we can
\n" ); document.write( "cube 16 and take the fourth root of that answer. In this case it's easier to find the
\n" ); document.write( "fourth root of 16 which is 2 and cube that to get \"2%5E3+=+8\" as the answer. So now we
\n" ); document.write( "can replace \"16%5E%283%2F4%29\" with \"8\" and the problem is then down to:
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\n" ); document.write( "\"8x%5E3y%5E%28-9%29\"
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\n" ); document.write( "But if a term in the numerator has a minus exponent, you can put that same term in the
\n" ); document.write( "denominator with a positive exponent. So we can change \"y%5E%28-9%29\" by putting it in the
\n" ); document.write( "denominator as \"y%5E9\" and the answer to this problem becomes:
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\n" ); document.write( "\"8x%5E3%2Fy%5E9\"
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\n" ); document.write( "Notice that in taking the fourth root of x and y, to get real answers we must limit
\n" ); document.write( "both of these variables to positive values. Therefore, we need to make the answer have
\n" ); document.write( "positive values of x and y which we can do through absolute values. Therefore, the answer is:
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\n" ); document.write( "\"8%2A%28abs%28x%29%29%5E3%2F%28abs%28y%29%29%5E9\"
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\n" ); document.write( "Hope this helps you to understand the problem.
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