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solve 81-(2^-2)   Explanation 1: 81 is the same as saying 34 writing out the whole problem again, replacing 81 with 34 you get 34(2^-2) (2^-2) is the same as saying 1/2^2=1/4 3-4*1/4 = 3^-4/4 =  3^-1 = 1/3   Explanation 2: 81 is simplified to a smaller number and is the same as saying 3^4. So our equation now looks like this: 3^-4(2^-2)... read more