题目内容：

已知2的m次方等于3,2的n次方等于5,求4m的次方+2n的次方的值

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2^m = 3 ,2^n = 5
题目【4m的次方+2n的次方】表述不清
2^(4m+2n)
= 2^(4m) * 2^(2n)
= (2^m)⁴ * (2^n)²
= 3⁴ × 5²
= 2025