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hieuxxx001
2 năm trước
Câu 6: Haỹ ghép số và chữ đứng trước biểu thức để được hai vế của một hằng đẳng thức đáng nhớ. 1. x3 + 1 A. x2 – 4 2. (x + 1)3 B. x3 – 8 3. (x – 2)(x + 2) C. (x + 1)(x2 – x + 1) 4. x3 – 6x2 +12x – 8 D. x2 + 4x + 4 5. (x – 2)(x2 + 2x + 4) E. x3 + 8 6. x2 – 8x + 16 F. (x – 2)3 7. (x + 2)2 G. x3 + 3x2+ 3x + 1 H. (x – 4)2
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