5 times the square root of 21
sqrt(441) = 21.
4.6 is a better approximation to the square root of 21.
21
The square root and square functions are inverse of one another EXCEPT that square root is not really a function: it is a 1-to-many mapping. So sqrt(square(21)) = sqrt(441) = ±21
5 times the square root of 21
if you mean what is square root of 200 in its simplest radical form its 10*21/2
First note that 84=4x21 and 4 is a perfect square. So square root of (84)=square root (4x21)=Square root (4) Square root (21)= 2 multiplied by the square root of 21. You can also write this using rational exponents, but this is not in radical form. It is an equivalent expression, however. 2 x (21)1/2
sqrt(21) cannot be simplified.
The square root of 21 is 4.58257569495584.
The square root of 21 is 4.58257569495584.
sqrt(441) = 21.
Square root of 9 is 3 and 3/21 = 1/7 in its simplest form
4.6 is a better approximation to the square root of 21.
21
Root 64 is 8, if by root you mean the square root. Then the problem become -square root 84(6+8) which is the - square root of 84(14) But square root of 84 is 2(square root of 21) so the final answer comes from -2(square root 21)x14 which is -28square root (21)
21The square root of 441 is 21