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Toán Lớp 8: Rút gọn: $($ $x^2$ $+$ $3$ $)$$^2$ $-$ $x^2$$($ $x^2$ $+$ $3$ $)$ $-$ $3$$($ $x$ $+$ $1$$)$$($ $x$ $-$ $1$$)$

Home/ Toán Lớp 8: Rút gọn: $($ $x^2$ $+$ $3$ $)$$^2$ $-$ $x^2$$($ $x^2$ $+$ $3$ $)$ $-$ $3$$($ $x$ $+$ $1$$)$$($ $x$ $-$ $1$$)$

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