Question

let c who can crack this 5 - 4 = 23 8 - 1 = 63. 6 -16 = 32 9 - 9 = 78 3 - 9 = 6 3 - 81 = ?

Answer 1

It's 0.
Methodology: Squaring first number, square rooting second number, and then subtracting them.

Answer 2

3^2 - sq.rt of 81 = 9 - 9 whether my guessing is right