If two numbers x, a perfect square and y, a perfect cube are added results a two digit number, whose digits if reversed, difference is 18, Find x and y ?  Answers:
A) x=4,y=8
B) x=4,y=9
C) x=4,y=7
D) x=4,y=64
E) x=5,y=8
4+64= 
<gadget id="calculator">4+64</gadget>
<output>68</output>
68   when reversed 86   86-68= 
<gadget id="calculator">86-68</gadget>
<output>18</output>
18   x=4,y=64   ANSWER:x=4,y=64
<result>D</result>
If two numbers x, a perfect square and y, a perfect cube are added results a two digit number, whose digits if reversed, difference is 18, Find x and y ?