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[" 13.If "3^(x+1)=9^(x-2)" ,find the val...

[" 13.If "3^(x+1)=9^(x-2)" ,find the value of "2^(1+x)" ."],[" 14.If "3^(4x)=(81)^(-1)" and "10^(1/y)=0.0001" ,find the value of "2^(-x+4y)" ."]

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