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(-1)^1989-(-)^1988
11 years ago

Answers

Steve
assuming both values are -1,

even powers of -1 are +1
odd powers are -1

so we have

-1 - +1 = -2

Or, you could factor out (-1)^1988 and have

(-1)^1988(-1 - 1) = (+1)(-2) = -2
11 years ago

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