If x + y = 36, then find (x - 27)3 + (y - 9)3.

1 81 2y 0

0

If x + y = 36 |Find = (x - 27)3 + (y - 9)3 If we have the variables more than the equations then we can put the extra variables according to our choice.  Here we have two variables and one equation so put y = 0   x + y = 36  x + 0 = 36 x = 36 Put in find we get =  (36 - 27)3 + (0 - 9)3 = 93 - 93 = 0