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1). 0.042). 1.493). 2.54). 1.77 |
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Answer» $(\begin{ARRAY}{l} \FRAC{1}{{\sqrt {729.23} - \sqrt {624.89} }} + \sqrt {729.23} - \sqrt {624.89} \approx \frac{1}{{\sqrt {729} - \sqrt {625} }} + \sqrt {729} - \sqrt {625} \\ \approx \frac{1}{{27 - 25}} + 27 - 25 \approx \frac{1}{2} + 2 \approx \frac{5}{2} \approx 2.5 \end{array})$ |
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