Rút gọn biểu thức:
a) (x2 – 2x + 2)(x2 – 2)(x2 + 2x + 2)(x2 + 2)
b) (x + 1)^2 – (x – 1)^2 + 3x^2 – 3x(x + 1)(x – 1)
c) (2x + 1)^2 + 2(4x2 – 1) + (2x – 1)^2
d) (m + n)^2 – (m – n)^2 + (m – n)(m + n)
e) (3x + 1)^2 – 2(3x + 1)(3x + 5) + (3x + 5)^2
Loga
Sinh Học lớp 12
