Four Fours/Lemmata/Two Fours/48

Puzzle

Using exactly $2$ instances of the number $4$, the task is to write an expression for $48$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$48 = 4! + 4!$

Solution $2$

$48 = 4! \times \sqrt 4$

Also see

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