Toán Lớp 8: c) (4 – 3x).(2x – 1) – 11 = x.(9 – 6x)
d) (x – 1).(x – 12) = (2x – 3).(5x – 4)
e) x.(9x + 1) – 3x .(3x – 5) = 12x – 5
f) (5x + 1).(5x – 2) – 10.(x – 10) = 25x.(x + 2)
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Toán Lớp 8: c) (4 – 3x).(2x – 1) – 11 = x.(9 – 6x)
d) (x – 1).(x – 12) = (2x – 3).(5x – 4)
e) x.(9x + 1) – 3x .(3x – 5) = 12x – 5
f) (5x + 1).(5x – 2) – 10.(x – 10) = 25x.(x + 2)
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