已知5^x=2,5^y=3,求5^3x+2y的值
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已知5^x=2,5^y=3,求5^3x+2y的值
![已知5^x=2,5^y=3,求5^3x+2y的值](/uploads/image/z/4309111-55-1.jpg?t=%E5%B7%B2%E7%9F%A55%5Ex%3D2%2C5%5Ey%3D3%2C%E6%B1%825%5E3x%2B2y%E7%9A%84%E5%80%BC)
解
5^x=2
5^y=3
5^(3x+2y)
=5^3x×5^2y
=(5^x)³×(5^y)²
=8×9
=72
5^x=2
5^y=3
5^(3x+2y)
=5^3x×5^2y
=(5^x)³×(5^y)²
=8×9
=72
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