Toán 9 Tính

N

nghgh97

[tex]A = \frac{1}{2}\sqrt {216} - \sqrt {24} + 2\sqrt {\frac{3}{2}} - 3\sqrt {\frac{2}{3}} [/tex]
[tex] = \frac{1}{2}\sqrt {4.9.6} - \sqrt {4.6} + \sqrt {3.2} - \sqrt {2.3} [/tex]
[tex] = 3\sqrt 6 - 2\sqrt 6 + \sqrt 6 - \sqrt 6 [/tex]
[tex] = \sqrt 6 [/tex]
 
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