1. Factorization: (2 times of X + 2x) (2 times of X + 2x-2) - 3 2. If a and B are integers, and the degree 2-x-1 of X is a factor of the degree 3 of AX + the degree 2 + 1 of BX, find the value of B 3. Find the minimum value of the second power of 4x - x + 3 Quick return,

1. Factorization: (2 times of X + 2x) (2 times of X + 2x-2) - 3 2. If a and B are integers, and the degree 2-x-1 of X is a factor of the degree 3 of AX + the degree 2 + 1 of BX, find the value of B 3. Find the minimum value of the second power of 4x - x + 3 Quick return,

: (2 times of X + 2x) (2 times of X + 2x-2) - 3 = (x ^ 2 + 2x) ^ 2-2 (x ^ 2 + 2x) - 3 = (x ^ 2 + 2x-3) (x ^ 2 + 2x + 1) = (x + 3) (x-1) (x + 1) ^ 2 ax ^ 3 + BX ^ 2 + 1 (x ^ 2-x-1) (AX-1) = ax ^ 3-x ^ 2-ax ^ 2 + x-ax + 1 = ax ^ 3-x ^ 2 (1 + a) x ^ 2 + X (1-A) + 1 (1-A) = 0 a = 1 - (1