Multiple choice

√20 + √180 - √125

  1. √75

  2. 3√5

  3. 3√15
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Simplify each radical: sqrt(20) = 2*sqrt(5), sqrt(180) = 6*sqrt(5), and sqrt(125) = 5*sqrt(5). Combining these gives 2*sqrt(5) + 6*sqrt(5) - 5*sqrt(5) = 3*sqrt(5).

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