logx(3+2倍根号2)= -2 求X
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logx(3+2倍根号2)=-2求Xlogx(3+2倍根号2)=-2求Xlogx(3+2倍根号2)=-2求Xx^(-2)=3+2根号2=(根号2+1)^2x=1/(根号2+1)=根号2-1logx(3
logx(3+2倍根号2)= -2 求X
logx(3+2倍根号2)= -2 求X
logx(3+2倍根号2)= -2 求X
x^(-2)=3+2根号2=(根号2+1)^2
x=1/(根号2+1)=根号2-1
logx(3+2√2)＝-2
x^(-2)＝3+2√2＝(1+√2)^2
x^(-1)＝1+√2
x＝1/(1+√2)
∴x＝-1+√2.
logx(3+2倍根号2)= -2
X=(3+2倍根号2)^(-1/2)=1/(1+2^1/2)^(-1)=2^1/2-1(根号2 -1)
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