Toán Lớp 7: 1) 12x – x ² – 36 = 0
2) x (2x – 7) + 14=4x
3) x(x- 2012) – 2013 x + 2012.2013=0
4) (x-1)³+1 +3x (x-4)
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Toán Lớp 7: 1) 12x – x ² – 36 = 0
2) x (2x – 7) + 14=4x
3) x(x- 2012) – 2013 x + 2012.2013=0
4) (x-1)³+1 +3x (x-4)
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