Log 2 7 log 7 4. 2log0.3x^2-7log0.3x-4<=0. log0 3 10-log0 3 3. log3(x2+2)-3=0.

Log 2 7 log 7 4. 2log0.3x^2-7log0.3x-4<=0. log0 3 10-log0 3 3. log3(x2+2)-3=0.
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