Question:

Simplify the following: \[ 40 - \sqrt{20} - \sqrt{160} \]

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When simplifying expressions with square roots, break down the roots into simpler terms whenever possible.
Updated On: Sep 30, 2025
  • \( 0 \)
  • \( 5 \)
  • \( 10 \)
  • \( 4 \)
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The Correct Option is D

Solution and Explanation

Step 1: Simplify the square roots. \[ \sqrt{20} = 2\sqrt{5}, \quad \sqrt{160} = 4\sqrt{10}. \]

Step 2: Substitute into the expression. \[ 40 - \sqrt{20} - \sqrt{160} = 40 - 2\sqrt{5} - 4\sqrt{10}. \]
Thus, the simplified expression is \( 4 \).
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