Toán Lớp 8: Bài 2: Thực hiện các phép tính sau:
1) (x – 2)2 – (3×4 – 12×3 + 5×2):3×2 2) (x + 3)(x – 3) – (x – 2)(x + 5)
3) (8×3 – 1): (4×2 +2x + 1) – (x – 5) 4) (x5 + x3 + x2 + 1):(x3 + 1)- x(x -1)
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Toán Lớp 8: Bài 2: Thực hiện các phép tính sau:
1) (x – 2)2 – (3×4 – 12×3 + 5×2):3×2 2) (x + 3)(x – 3) – (x – 2)(x + 5)
3) (8×3 – 1): (4×2 +2x + 1) – (x – 5) 4) (x5 + x3 + x2 + 1):(x3 + 1)- x(x -1)
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