\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "We want to remove the parentheses in the top.\r\n" );
document.write( "Let's first make sure every factor inside the\r\n" );
document.write( "parentheses shows its exponent. That is, give\r\n" );
document.write( "the 15 an exponent of 1:\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Remove the parentheses on top by distributing\r\n" );
document.write( "exponents. That is, by multiplying each exponent \r\n" );
document.write( "inside the parentheses by the exponent outside\r\n" );
document.write( "the parentheses on the right:\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Next we make each factor with a negative exponent\r\n" );
document.write( "have a positive exponent by bringing from numerator\r\n" );
document.write( "to denominator or from denominator to numerator.\r\n" );
document.write( "\r\n" );
document.write( "I'll do them one at a time, but you can do them all in\r\n" );
document.write( "one step. \r\n" );
document.write( "\r\n" );
document.write( "Move the
from the top to the bottom as
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Move the
from the top to the bottom as
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Move the
from the bottom to the top as
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Move the
from the bottom to the top as
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Now we have only positive exponents.\r\n" );
document.write( "\r\n" );
document.write( "Add the exponents of x in the top, getting
as
:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Subtract the exponents of the y's.\r\n" );
document.write( "\r\n" );
document.write( "Use the rule: Subtract them \"largest\r\n" );
document.write( "minus smallest, and put the result\r\n" );
document.write( "where the LARGER exponent was before\r\n" );
document.write( "subtracting. So we subtract exponents\r\n" );
document.write( "of the y's as 8-4 or 4 and put
\r\n" );
document.write( "in the bottom because that's where the\r\n" );
document.write( "larger exponent of y was in the last step:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Finally we multiply the
out as 5625,\r\n" );
document.write( "and the final answer is:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( " \r\n" );
document.write( "Edwin
\n" );
document.write( "