RÚT G N BI U TH CỌ Ể ỨA. (4X + 1)2 + (4X – 1)2 – 2(1 + 4X)(4X – 1) B....
Bài 3: Rút g n bi u th cọ ể ứa. (4x + 1)
2
+ (4x – 1)2
– 2(1 + 4x)(4x – 1) b. 3(22
+ 1)(24
+ 1)(28
+ 1)(216
+ 1)c. x(2x2
– 3) – x2
(5x + 1) + x2
. d. 3x(x – 2) – 5x(1 – x) – 8(x2
– 3)