Toán Lớp 9: (2√6 – 4√3 + 5√2 -$\frac{1}{4}$√8)*3√6
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Toán Lớp 9: (2√6 – 4√3 + 5√2 -$\frac{1}{4}$√8)*3√6
rút gọn nhé
Comments ( 2 )
\left( {2\sqrt 6 – 4\sqrt 3 + 5\sqrt 2 – \dfrac{1}{4}.\sqrt 8 } \right).3\sqrt 6 \\
= \left( {2\sqrt 6 – 4\sqrt 3 + 5\sqrt 2 – \dfrac{1}{4}.2\sqrt 2 } \right).3\sqrt 6 \\
= \left( {2\sqrt 6 – 4\sqrt 3 + \dfrac{{9\sqrt 2 }}{2}} \right).3\sqrt 6 \\
= 6.6 – 4.3.3\sqrt 2 + \dfrac{{9\sqrt 2 }}{2}.3\sqrt 6 \\
= 36 – 36\sqrt 2 + 27\sqrt 3
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