Bài 1: Tìm x sao cho:
a)(x-1)^3+3(x+1)^2=(x^2-2x+4)(x+2)
b)(x^2-x+1)(x+1)-3(x-2)(x+2)=(x-1)^3
c) (x – 3)(x2 +3x + 9) – x(x + 2)(x – 2) = 1
d) (x + 1)3 – (x – 1)3 – 6 (x – 1)2 = –10
Loga
Sinh Học lớp 12
