tính giá trị biểu thức A=11.3 mũ 22.3 mũ 7-9 mũ 15 trên (2.3 mũ 14) tất cả mũ 2 cho mik hỏi bài này làm kiểu nào ạ giúp mik với xong mik vote 5 sao cảm ơn

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