Toán Lớp 8: Rút gọn biểu thức:
$(x+1)(x^2-x+1)-(x-1)(x^2+x+1)$
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Toán Lớp 8: Rút gọn biểu thức:
$(x+1)(x^2-x+1)-(x-1)(x^2+x+1)$
Comments ( 2 )
=1+1