Упростите выражения: (x-10)(x²+10x+100)-x³ y³+(7-y)(49-7y+y²)

Question

Упростите выражения:
(x-10)(x²+10x+100)-x³


y³+(7-y)(49-7y+y²)

Answer 1

(x-10)(x²+10x+100)-x³=x³-1000-x³=-1000
y³+(7-y)(49-7y+y²)=343-98y+14y²=14y²-98y+343