Evaluate
-\frac{9\sqrt{2}}{4}\approx -3.181980515
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\frac{3}{4}\sqrt{2}-3\sqrt{2}
Combine \frac{1}{2}\sqrt{2} and \frac{1}{4}\sqrt{2} to get \frac{3}{4}\sqrt{2}.
-\frac{9}{4}\sqrt{2}
Combine \frac{3}{4}\sqrt{2} and -3\sqrt{2} to get -\frac{9}{4}\sqrt{2}.
Examples
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