а) −3а³ b² * 5 a²* b⁷ = -15a⁵b⁹
б) – (2х² у)⁴ = -16x⁸y⁴
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а) −3а³ b² * 5 a²* b⁷ = -15a⁵b⁹
б) – (2х² у)⁴ = -16x⁸y⁴