Разложите на множители: а) 16 х^4-81y^4 б) 48a^4-3b^4 в) 1/81m^8-1 г) 32-1\2 m^6

А) 16 х^4-81y^4=(4x^2-9y^2) (4x^2+9y^2)=(2x-3y) (2x+3y) (4x^2+9y^2) б) 48a^4-3b^4=3 (4a^2-b^2) (4a^2+b^2)=3 (2a-b) (2a+b) (4a^2+b^2) в) 1/81m^8-1=(1/9m^4-1) (1/9m^4+1)=(1/3m^2-1) (1/3m^2+1) (1/9m^4+1=(1/V3 m-1) (1/V3 m+1) (1/3m^2+1) (1/9m^4+1) г) 32-1\2 m^6=1/2 (64-m^6)=1/2 (8-m^3) (8+m^3)=1/2 (2-m) (4+2m+m^2) (2+m) (4-2m+m^2)