Question

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Answer 1

Explicación paso a paso:

1. (1)^3+(1)^2(2)-(1)(2)^2+(2)^3 = 7

2. 12(1/2)^2(1/3)^3(1/4) = 1/36

3. $\frac{(1+2)(1-2)}{1-2(1)(2)+4} = -3$