Racine Carree Calculator

The radicand. Negative values are allowed; an even root of a negative number is imaginary.
Multiplies the root, so 3 with 18 gives 3 sqrt(18) = 9 sqrt(2).
Root
12
Square Root and Nth Root Calculator
Rounded root
12
Exact (simplified radical)
12
Factor outside the radical
12
Radicand left inside
1
Perfect power?
Yes
Negative branch
-12
Check (root raised to the index)
144
Expression
sqrt(144) = 12 = 12
Worked out from NIST Digital Library of Mathematical Functions, 4.2(i) Powers and Roots and 1 other source.

How this is worked out

3 steps
  1. 144 is a perfect square: 12^2 = 144.
  2. Decimal value: 12 = 12.
  3. An even root has two real branches: +12 and -12.

Results are general information, not financial, tax, legal, medical or engineering advice.