Toán Lớp 8: (x – y)^2 bằng:
A. x^2 + y^2 B. (y – x)2 C. y^2 – x^2 D. x^2 – y^2
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Toán Lớp 8: (x – y)^2 bằng:
A. x^2 + y^2 B. (y – x)2 C. y^2 – x^2 D. x^2 – y^2
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