Question

2√21 can be written in the form √p. Where p is an integer. What is the value of p?

Answer 1

The answer is √84.

Explanation:

To find the value of p, we need to square the expression 2√21 to get rid of the square root. When we do this, we get 4 * 21 = 84, so the value of p is 84. This means that 2√21 can be written as √84.

Answer 2

p = 84

Explanation:

2
`√(21)` ( place the 2 inside the radical by squaring it , that is

=
`√(2^2(21))`

=
`√(4(21))`

=
`√(84)`