Ответ:
а) 20а³×(5a)² = 20a³×5²a² = 20a³×25a² = 500a⁵.
б) -0,4x⁵×(2x³)⁴ = -0,4x⁵×2⁴x¹² = -0,4x⁵×16x¹² = -6,4x¹⁷.
в) (3x⁶y³)⁴ × (-¹/⁸¹xy²) = 3⁴x²⁴y¹²×(-¹/⁸¹xy²) = 81x²⁴y¹²×(-¹/⁸¹xy²) = -x²⁵y¹⁴.
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Ответ:
а) 20а³×(5a)² = 20a³×5²a² = 20a³×25a² = 500a⁵.
б) -0,4x⁵×(2x³)⁴ = -0,4x⁵×2⁴x¹² = -0,4x⁵×16x¹² = -6,4x¹⁷.
в) (3x⁶y³)⁴ × (-¹/⁸¹xy²) = 3⁴x²⁴y¹²×(-¹/⁸¹xy²) = 81x²⁴y¹²×(-¹/⁸¹xy²) = -x²⁵y¹⁴.