Toán Lớp 8: Rút gọn biểu thức:
$(2x$ $+$ $y$ $)$ $.$ $(4x^{2}$ $-$ $2xy$ $+$ $y^{2}$ $)$ $-$ $(2x-$ $y$ $)$ $.$ $(4x^{2}$ $+$ $2xy$ $+$ $y^{2})$
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Toán Lớp 8: Rút gọn biểu thức:
$(2x$ $+$ $y$ $)$ $.$ $(4x^{2}$ $-$ $2xy$ $+$ $y^{2}$ $)$ $-$ $(2x-$ $y$ $)$ $.$ $(4x^{2}$ $+$ $2xy$ $+$ $y^{2})$
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