Question

if x + y = 10 what is the greatest value of xy​

Answer 1

Answer:

The greatest value of x and y is 5.

If x+y=10 then,x and y is 5.

x+y=10

=>5+5=10.

This is the answer.I hope it is clear to you.

Answer 2

Possible cases for (x,y) can be (10,0) , (9,1) , (8,2) , (7,3) , (6,4) , (5,5) , (4,6) , (3,7) , (2,8) , (1,9) and (0,10).
Among them xy is greatest when x=y=5
i.e. xy = 25