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Toán Lớp 8: f) x^2+6x+9-y^2 g) 3x^2+6xy+3y^2-3z^2 h) 9x-x^3 i) (2xy+1)^2-(2x+y)^2 j) x^3+2x^2-6x-27 k) x^3-x^2-5x+125

Home/ Toán Lớp 8: f) x^2+6x+9-y^2 g) 3x^2+6xy+3y^2-3z^2 h) 9x-x^3 i) (2xy+1)^2-(2x+y)^2 j) x^3+2x^2-6x-27 k) x^3-x^2-5x+125

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