Evaluate
-\sqrt{55}-\sqrt{65}\approx -15.478456235
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\left(-\sqrt{5}\right)\sqrt{11}+\left(-\sqrt{5}\right)\sqrt{13}
Use the distributive property to multiply -\sqrt{5} by \sqrt{11}+\sqrt{13}.
-\sqrt{55}-\sqrt{5}\sqrt{13}
To multiply \sqrt{5} and \sqrt{11}, multiply the numbers under the square root.
-\sqrt{55}-\sqrt{65}
To multiply \sqrt{5} and \sqrt{13}, multiply the numbers under the square root.
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