Evaluate
\frac{1}{81}\approx 0.012345679
Factor
\frac{1}{3 ^ {4}} = 0.012345679012345678
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\frac{1}{324}\times 4
Calculate 18 to the power of -2 and get \frac{1}{324}.
\frac{1}{81}
Multiply \frac{1}{324} and 4 to get \frac{1}{81}.
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{ x } ^ { 2 } - 4 x - 5 = 0
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