Toán Lớp 9: √ (1-√ 2)^2-√2 giúp mình với ạ
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Toán Lớp 9: √ (1-√ 2)^2-√2 giúp mình với ạ
Comments ( 2 )
$=|1-\sqrt{2}|-\sqrt{2}$
Vì \sqrt{2}>1
$=-(1-\sqrt{2})-\sqrt{2}$
$=-1+\sqrt{2}-\sqrt{2}$
$=-1$