Fortune Telling Collection - Fortune-telling birth date - The x power of 25 = the y power of 2000. 80 = 2000. Require the value of X+Y-XY, which should be understandable. Don't divide by the same radix power. You haven't learned yet. It is urgent.

The x power of 25 = the y power of 2000. 80 = 2000. Require the value of X+Y-XY, which should be understandable. Don't divide by the same radix power. You haven't learned yet. It is urgent.

25^x=2000

(25^X)^Y=2000^y

That is, 25 xy = 2000 y ①.

80^y=2000

(80^y)^x=2000^x

That is, 80 xy = 2000 x ②.

① * ② Get (25 * 80) xy = 2000 (x+y)

2000^xy=2000^(x+y)

So xy=x+y

X+Y-XY

=xy-xy

=0