Multiple choice general knowledge math & puzzles

sqrt(2+sqrt(2+sqrt(2+sqrt(2+......infinity)))))=? Ex: sqrt(4)=2 write it on paper u'll understand it

  1. -1

  2. 2

  3. both

  4. 3

  5. infinity

  6. none of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let x = sqrt(2 + x). Squaring both sides gives x² = 2 + x, or x² - x - 2 = 0. Factoring gives (x - 2)(x + 1) = 0. Since the square root must be positive, x = 2.