Multiple choice

Which of the following is equal to √80 ?

  1. √16 × √5 = 4√5

  2. √16 + √5

  3. 8 × √10

  4. √20 + √4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

To simplify √80, find the largest square factor. 80 = 16 * 5. Thus, √80 = √16 * √5 = 4√5.

Keep practicing — related questions