document.write( "Question 103991: I need to know how to solve a problem. I no the answer but i dont no how to expain. the prolem shows a tiny 3 almost ontop of the square root symbol then the square root -243 which i have to simlify. the answer is -6 but i dont no how to explain how i got my answer! please help me!!!!! \n" ); document.write( "
Algebra.Com's Answer #75661 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The goal of simplifying expressions with third roots is to factor the radicand into a product of two numbers. \n" ); document.write( "One of these two numbers must be a value in which you can take the third root and still get a rational number. \r \n" ); document.write( "\n" ); document.write( "So let's list the factors of -243\r \n" ); document.write( "\n" ); document.write( "Factors:\r \n" ); document.write( "\n" ); document.write( "1, 3, 9, 27, 81, 243\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Notice how 27 is the largest value in which you can take the third root and still get a rational number, so lets break -243 down into -27*9\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |