Разложите на множители: 1. (2m+n)(6m+-3n)(8m+16n); 2. m^2 -mn+am-an; 3. a^3 +5a^2 +5a +25; 4. b^3 +b^2*c-b^2*d-bcd; 5. x^2 +x-y^2 -y; 6. a^3 +a+b^3 +b; 7. x^16 -y^16 ; 8. x^2 -5x-14; 9. y^2 -4y-12; 10. a^4 +a^2 -2; 11. b^4 +b^2 +1; 12. x^4 -8x^2 +4; 13. x^8 +3x^4 +4; 14. x3 -3x2 +3x +7.
