Toán Lớp 8: Rút gọn biểu thức
a)A= (x – 1$)^{3}$ – (x – 1$)^{3}$
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Toán Lớp 8: Rút gọn biểu thức
a)A= (x – 1$)^{3}$ – (x – 1$)^{3}$
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