( - 2 ) ^ { - 2 } - 3 ( 0,5 ) ^ { 3 }
Evaluate
-0,125
Factor
-0,125
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\frac{1}{4}-3\times 0,5^{3}
Calculate -2 to the power of -2 and get \frac{1}{4}.
\frac{1}{4}-3\times 0,125
Calculate 0,5 to the power of 3 and get 0,125.
\frac{1}{4}-0,375
Multiply 3 and 0,125 to get 0,375.
-\frac{1}{8}
Subtract 0,375 from \frac{1}{4} to get -\frac{1}{8}.
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