Упростите уравнение 1)1000+а^6-(а^2+10)(а^4-10^2+100)
2)(а^3-9)(а^6+9^3+81)-а^9-729
3)0,572t^3-100+(0,8t+5)(0,64t^2-4t+25)
4(1,1d-c^3(1,21d^3+1,1c^3d+c^6)-1,331d^3+
2c^9