Question

1a^3(7a^2-1)(6a^2+3)
Упростите выражение

Answer 1

$1a^3(7a^2-1)(6a^2+3)=(7a^5-a^3_(6a^2+3)=42a^7+21a^5-6a^5-3a^3= \ =42a^7+15a^5-3a^3$