3 [42-2 (10^-9^)]

3 answers

TJ, I have been out of school for quite a while...please let me know what this symbol is used to represent: ^
It is used for exponents, but some rather strange people use it to mean ^2 or squared. Going on that assumption, we have

3[42-2 (10^2-9^2)]
3[42-2(100-81)]
3[42-2*19]
...

If I got that wrong, TJ, fix it and carry on.
'Rather strange people' lol