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Toán Lớp 8: Chọn câu sai A. x^2-y^2=(x+y)(x-y) B. (x+y)(x+y)=y^2-x^2 C. (x+y)^2=(x+y)(x+y) D. (-x-y)^2=(-x)^2-2(-x)y+y^2

Home/ Toán Lớp 8: Chọn câu sai A. x^2-y^2=(x+y)(x-y) B. (x+y)(x+y)=y^2-x^2 C. (x+y)^2=(x+y)(x+y) D. (-x-y)^2=(-x)^2-2(-x)y+y^2

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