Toán Lớp 11: Khai triển nhị thức :
a) ( x+ 1/ x^2) ^13
b) ( 1- 2x^2 ) ^8
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Toán Lớp 11: Khai triển nhị thức :
a) ( x+ 1/ x^2) ^13
b) ( 1- 2x^2 ) ^8
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