document.write( "Question 553693: (x+3)^3+(x+5)^3=8 \n" ); document.write( "
Algebra.Com's Answer #361024 by rapaljer(4671)![]() ![]() You can put this solution on YOUR website! I set the equation equal to zero \n" ); document.write( "(x+3)^3v+ (x+5)^3 - 8 = 0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "and then graphed the function \n" ); document.write( "y=(x+3)^3 + (x+5)^3 - 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Where this graph crosses the x-axis will be solution(s) to the equation. It happens at x=-3. I don't know of an easy way to solve it algebraically. I suppose you could expand the cubes of the binomials, combine like terms, and solve as a polynomial equation. I can't think of an EASY way to do this. The graphing calculator is the BEST way, and the solution is x=-3. It's better than nothing I guess.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If you or anyone needs to contact me, my Email address is rapaljer@seminolestate.edu.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Dr. Robert J. Rapalje, Retired \n" ); document.write( "Seminole State College of Florida \n" ); document.write( "Altamonte Springs Campus \n" ); document.write( " |