Answer:
[tex] \dashrightarrow \: { \tt{(x - 1) \sqrt{( {x}^{2} - 4) } }} \\ \\ \dashrightarrow \: { \tt{(x - 1) \sqrt{( {x}^{2} - {2}^{2} )} }}[/tex]
• from difference of two squares quadratic law:
[tex]{ \boxed{ \rm{( {a}^{2} - {b}^{2} ) = (a - b)(a + b) }}}[/tex]
• a is x and b is 2
[tex] \dashrightarrow \: { \tt{(x - 1) \sqrt{(x - 2)(x + 2)} }} \\ \\ [/tex]
