Упростите выражение (5а^3+2)²-(5a^3-2)²=
(5a^3 + 2)^2 - (5a^3 - 2)^2 = = // a^2 - b^2 = (a - b)* (a + b) = // = (5a^3 + 2 - (5a^3 - 2)) * (5a^3 + 2 + (5a^3 - 2)) = = (5a^3 + 2 - 5a^3 +2) * (5a^3 + 2 + 5a^3 - 2) = = 4 * (10a^3 ) = = 40a^3