1 and 3
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They are: 1 times 4 = 4 or 2 times 2 = 4
8
2 and 2 2+2 = 4 2*2 = 4
yes ma'am ADDED: The above is wrong. 2^-2 means 1/2^2 or 1/4 -2^2 can equal - 4
4 multiplied by 4 is equal to 16 .5 multiplied by 4 is equal to 2 16 added to 2 equals 18