Toán Lớp 9: ( 1 + √3 – √2 ) · ( 1+ √3 + √2 )
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Toán Lớp 9: ( 1 + √3 – √2 ) · ( 1+ √3 + √2 )
Comments ( 2 )
$(1+\sqrt{3}-\sqrt{2})(1+\sqrt{3}+\sqrt{2})$
$=(1+\sqrt{3})^2-(\sqrt{2})^2$
$=1+2\sqrt{3}+3-2$
$=2\sqrt{3}+2$