tentukan hadil perkalian dan pembagian bentuk akar [tex]( \sqrt{2 + \sqrt{3} } )( \sqrt{2 - \sqrt{3)} } [/tex]

[tex]( \sqrt{2 + \sqrt{3} } )( \sqrt{2 - \sqrt{3} } ) = ... \\ rumus \: \\ (a + b)(a - b) = {a}^{2} - {b}^{2} \\ \\ ( \sqrt{2 + \sqrt{3} } )( \sqrt{2 - \sqrt{3} } ) \\ = ( \sqrt{2} ) {}^{2} - ( \sqrt{ \sqrt{3} } ) {}^{2} \\ = 2 - \sqrt{3} [/tex]