hasil dari (√2+4)(√2-3) =......

[tex]( \sqrt{2 + 4} )( \sqrt{2 - 3} )[/tex]
[tex]2 - 3 \sqrt{2} + 4\sqrt{2} - 12 [/tex]
[tex]2 + \sqrt{2} - 12[/tex]

[tex] \sqrt{2 = 4 + \sqrt{4 = 16 = 20} } [/tex]
[tex] \sqrt{2 = 4 - \sqrt{3 = 9 = - 5} } [/tex]