Question

Cum de calculează? AJUTOR

Answer 1

Inlocuiesti x-ul in ecuatie
$6 \times (4 - \sqrt{2} )^{2} - 18 \times (4 - \sqrt{2} ) + 9 = \\ - 12(4 - \sqrt{2})^{2} + 9 = \\ 9 - 12(4 - \sqrt{2} )^{2} = \\ 3(3 - 4(4 - \sqrt{2} )^{2} )$
Sper ca am calculat bine.