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-1¹²¹ -1¹²² -1¹²³ -1¹²^⁴ =?
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-1^n is 1 (if n is even) OR -1 (in n is odd)
but in this equation power is on 1 not -1
-1¹²¹-1¹²² -1¹²³-1¹²^⁴ = -1-1-1-1 = -4
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