Question

3 la puterea lg x la patrat =3

Answer 1

$3^{lg x^{2} } = 3 \\ lg x^{2} =1 \\ 10^1=x^2 \\ x= \sqrt{10}$

Answer 2

$3^{lg x^{2}}=3 \\ 3^{lg x^{2}}=3^{1} \\ lg x^{2} = 1 \\ 10^{1}= x^{2} \\ x^{2} =10 \\ x= +/-\sqrt{10} \\ x_{1}= \sqrt{10} \\ x_{2}= -\sqrt{10}$


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