Question

Упростите выражения (34.5—34.6):
5. 1) (x-10)(х2 + 10x + 100) - x3; 2) 216 - (a + 6)(а? - 6а + 36);
3) y + (7 - y)(49-7y+y²)

Answer 1

1. (х-10)(х²+10х+100)-х³=х³+10х²+100х-10х²-100х-1000-х³=-1000

2. 216-(а+6)(а²-6а+36)=216-(а³-6а²+36а+6а²-36а+216)=216-(а²+216)=216-а³-216=-а³