Ответ:
3.
1) -3m²n⁴×3n²m⁵ = -9m⁷n⁶
2) (-3a⁷b²)⁴ = -3⁴a²⁸b⁸ = 81a²⁸b⁸
4.
4a⁴×(2a³b²)² = 4a⁴×2²a⁶b⁴ = 4a⁴×4a⁶b⁴ = 16a¹⁰b⁴
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Ответ:
3.
1) -3m²n⁴×3n²m⁵ = -9m⁷n⁶
2) (-3a⁷b²)⁴ = -3⁴a²⁸b⁸ = 81a²⁸b⁸
4.
4a⁴×(2a³b²)² = 4a⁴×2²a⁶b⁴ = 4a⁴×4a⁶b⁴ = 16a¹⁰b⁴