document.write( "Question 523083: I am having trouble understanding how to do this problem. (3a-5)cubed\r
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document.write( "I have the answer but don't know how they got it. Can you please help me?????\r
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document.write( "Thanks, \r
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document.write( "Jill \n" );
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Algebra.Com's Answer #347217 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "which is \n" ); document.write( "(3a-5)*(3a-5)*(3a-5) \n" ); document.write( "First FOIL (3a-5)(3a-5) \n" ); document.write( "9a^2 - 5a - 5a + 25 \n" ); document.write( "9a^2 - 10a + 25 \n" ); document.write( "Multiply this by (3a-5), using the old method of multiplying you learned in grade school. \n" ); document.write( "9a^2 - 10a + 25 \n" ); document.write( ". . X . . 3a - 5 \n" ); document.write( "---------------- \n" ); document.write( "you should get \n" ); document.write( "27a^3 - 75a^2 + 125a - 125 \n" ); document.write( " |