if A [] B = A^B-(A+B), 7 [] 9 = ?
tom, chris, charls, TIM, lorra, lindy:
please do not use different aliases.
A[]B = A^B-(A+B)
for 3[]4, substitute A=3, B=4, rewrite the equation as:
3[]4=3^4-(3+4)=81-7=74
You can do the same for 7[]9.
If you wish, you can post your answer for checking.