It is: 82-(2*8)+3 = 51
-2 times -2 = plus 4 since minus times minus is plus
(-2)^4 = -2 x -2 x-2 x-2 = +16 ( a minus times a minus is plus)
2 times 2 plus 2 times 2 plus 2 minus 2 times 2 is equal to 6.
Two plus 3 minus 2 times 1 squared plus 4 times 16 squared minus 4 times 2 is equal to 1,019.
It is 20.
Six times 5^2 minus 5 times 4 plus 8 is equal to 138.
It is plus 4
A plus times a plus is still a plus. Below is the way I remembered it: If there is not a minus sign, it is plus (positive). If there is 1 minus sign, it is minus (negative). If there are 2 minus signs, it is plus (positive).
10^2 minus 4 times 8 divided by 8 plus 9 is equal to 105.
1 minus 2 plus 123 times 4 is equal to 491.
17
44