document.write( "Question 1085460: 
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document.write( "How for can a car run for (7x-2y)hours at\r\n" );
document.write( "(49x2+14xy+4y2)kilometers per hour?

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Algebra.Com's Answer #699534 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Time = (7x-2y) hours\r\n" );
document.write( "Rate = (49x2+14xy+4y2) kilometers per hour\r\n" );
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document.write( "The formula is\r\n" );
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document.write( "Distance = Rate × Time\r\n" );
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document.write( "Distance = (49x2+14xy+4y2)(7x-2y)\r\n" );
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document.write( "Now simplify this:\r\n" );
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document.write( "If you switch the factors (7x-2y)(49x2+14xy+4y2) \r\n" );
document.write( "and recognize this as the factorization of (7x)3-(2y)3,\r\n" );
document.write( "then you'll know this is the answer. Otherwise, multiply it\r\n" );
document.write( "all the way out and everything will cancel except 343x3-8y3, \r\n" );
document.write( "which = (7x)3-(2y)3.\r\n" );
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document.write( "Edwin
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