(5a^3-4b)^2+(4b+5a^3)^2 (x^2-7y^3)^2+(x^2+7y^3)^2 - вопрос №86531275342453227322732 от shkorolewsky20 26.03.2022 02:56

Question

Математика: (5a^3-4b)^2+(4b+5a^3)^2 (x^2-7y^3)^2+(x^2+7y^3)^2 !

shkorolewsky20 · Answer

(5a³ - 4b)² + (4b + 5a³)² = 25a⁶ - 40a³b + 16b² + 16b² + 40a³b + 25a⁶ = 50a⁶ + 32b²
(x² - 7y³)² + (x² + 7y³)² = x⁴ - 14x²y³ + 49y⁶ + x⁴ + 14x²y³ + 49y⁶ = 2x⁴ + 98y⁶