On the board log(xy) should not have base a since it was not written for the rest of the equation.
Also, ln xÂ³(xÂ² + 3 )^(1/4) should be written as ln [xÂ³(xÂ² + 3)]^(1/4). Only then xÂ³ will also be raised to the power of 1/4.
How to use properties of logs to expand an expression with roots
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