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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: Rút gọn phân thức sau $\frac{x^{3}-y^{3}+z^{3}+3xyz}{(x+y)^{2}+(y+z)^{2}+(z+x)^{2}}$

Toán Lớp 8: Rút gọn phân thức sau
$\frac{x^{3}-y^{3}+z^{3}+3xyz}{(x+y)^{2}+(y+z)^{2}+(z+x)^{2}}$

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222-9+11+12:2*14+14 = ? ( )