Multiple choice

Write √32  -  √18 in the form a√2

  1. 2√2

  2. 3√2

  3. √2

  4. 4√2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

sqrt(32) = 4*sqrt(2) and sqrt(18) = 3*sqrt(2). Subtracting them gives 4*sqrt(2) - 3*sqrt(2) = sqrt(2).

Keep practicing — related questions