已知x满足2^2x+3-2^2x+1=48,求x的值

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已知x满足2^2x+3-2^2x+1=48,求x的值
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已知x满足2^2x+3-2^2x+1=48,求x的值
已知x满足2^2x+3-2^2x+1=48,求x的值

已知x满足2^2x+3-2^2x+1=48,求x的值
2^(2x+3) - 2^(2x+1)=48
2^(2x+1)*4 - 2^(2x+1)=48
3*2^(2x+1)=48
2^(2x+1)=16
2^(2x+1)=2^4
2x+1=4
x=3/2

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