Four Fours/8/Solutions

Puzzle: Four Fours: $8$

Using exactly $4$ instances of the number $4$, the task is to write an expression for $8$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$8 = \paren {4 \times 4} - \paren {4 + 4}$

Solution $2$

$8 = 4 + 4 + 4 - 4$

Solution $3$

$8 = \sqrt 4 + \sqrt 4 + \sqrt 4 + \sqrt 4$