Question

Упростите выражения
A) (а³-9)(а⁶+9а³+81)-а⁹-729

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

Answer 1

A) (а³-9)(а⁶+9а³+81)-а⁹-729=а⁹+9a⁶+81а³-9a⁶-81a³-729-а⁹-729=-729-729=-1458

Б) (1,1d-c³)(1,21d²+1,1c³d+c⁶)-1,331d³+2c⁹=1,331d³+1,21c³d²+1,1dc⁶-1,21c³d²-1,1c⁶d-c⁹-1,331d³+2c⁹=c⁹