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的值已知5^x=2,5^y=3,求5^3x+2y的值解5^x=25^y=35^(3x+2y)=5^3x×5^
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
已知5^x=2,5^y=3,求5^3x+2y的值
解
5^x=2
5^y=3
5^(3x+2y)
=5^3x×5^2y
=(5^x)³×(5^y)²
=8×9
=72
5^(3x+2y)=5^(x+x+x+y+y)=2*2*2*3*3=72
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