1. Hasil dari - Universityku

$sqrt{9 - sqrt{56} }$
2. Hasil dari
$(2 + sqrt{2)} (2 - sqrt{2} )$

1. Hasil dari

Penjelasan dengan langkah-langkah:

$(1). : : sqrt{9 - sqrt{56} } =$

$= sqrt{9 - 2 sqrt{14} }$

$= sqrt{( sqrt{2} - sqrt{7}) {}^{2} }$

$= sqrt{7} - sqrt{2}$

$< = = = = = = = = = = = = = >$

$(2). : : (2 + sqrt{2} )(2 - sqrt{2} ) =$

$= 2 {}^{2} - sqrt{2} {}^{2}$

$= 4 - sqrt{2} {}^{2}$

$= 4 - 2$

$= 2$

$< = = = = = = = = = = = = = >$

$( : semoga : membantu : kak : )$

$< = = = = = = = = = = = = = >$