Solve each inequality
1. (x-1)(x+2)(2x-7)^2≤0
Solve the system of inequalities
2. 3x-1/2-x≤2, 2x-x/3 ≥1
3. 2p-p-2/5>4, p/2-p/8≤6
Factor:
3. 2a^n+a^n+1+2+a