document.write( "Question 996961: if x and y are two positive real numbers such that 25x square + 49y s quare equal to 841 and xy equal to 12 then find the value of 125x cube + 343y cube \n" ); document.write( "
Algebra.Com's Answer #615403 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! if x and y are two positive real numbers such that 25x square + 49y s quare equal to 841 and xy equal to 12 then find the value of 125x cube + 343y cube \n" ); document.write( "---------- \n" ); document.write( "841 = 400 + 441 = 25*4^2 + 49*3^2 \n" ); document.write( "---- \n" ); document.write( "x = 4, y = 3 \n" ); document.write( "--- \n" ); document.write( "125*4^3 + 343*3^3 = 8000 + 9261 \n" ); document.write( "= 17261 \n" ); document.write( " \n" ); document.write( " |