Question

Please help, I don’t understand.

Answer 1

To find the answers, you basically have to use trial and error. I'm not sure how else to find them.

Anyways, grouping up "6+12" as one group and "2^2-2+1" as the other leads to

`(6+12) / (2^2-2+1) = 18 / 3 = 6`

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For the next problem, you'll need 2 sets of parenthesis, but this time one set of parenthesis is inside another one. The (6+12) becomes 18, which divides by 2 to get 9. Squaring that leads to 81 and then you subtract off 1 to get 80.

`( (6+12) / 2)^2 - 2 + 1 = (18/ 2)^2 - 1 = 9^2-1 = 81-1 = 80`