6
Yes
2 times 2 plus 2 times 2 plus 2 minus 2 times 2 is equal to 6.
-2
84
-2 times -2 = plus 4 since minus times minus is plus
it doesn't
2 plus to = 2 + to and there is not much else you can do with that.
30
25
1 minus 2 plus 123 times 4 is equal to 491.
17
2