Упростить выражения 1) 0,512t^3-100+(0.8t+5)(0.64t^2-4t+25) 2)...

Question

Упростить выражения

1) 0,512t^3-100+(0.8t+5)(0.64t^2-4t+25)

2) (1.1d-c^3)(1.21d^2+1.1c^3d+c^6)-1.331d^3+2c^9

Answer 1

0,512t³ - 100 + (0,8t + 5)(0,64t² - 4t + 25 ) = 0,512t³ - 100 + 0,512t³ + 125 = 25

(1,1d - c³)(1,21d² + 1,1c³d + c⁶) - 1,331d³ + 2c⁹ =1,331d³ - c⁹ - 1,331d³ + 2c⁹ =c⁹