a) 2x3 – 4x2 + 6x b) 2x(x – 4) + 3(x – 4)
c) 3x4 – 6x3 + 9x2 d) 3x(x – 5) + 4(5 – x)
e) 4x(x – 6) – 5(6 – x) f) x2(x – 7) + 2x(7 – x)
g) x2 + 2x + 1 h) x2 – 4x + 4
i) x2 – 4 j) 4x2 – 9
GIÚP MÌNH VỚIII
Loga
Sinh Học lớp 12
