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secondary 4 | A Maths

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Pls help me with part iii. Preparing for o levels. Thank you so much!

The solutions in part ii and part iii would therefore have the same (real root is u = 2 or 3^x = 2).

We then proceed to solve the equation 3^x = 2 which is solveable by applying logs on both sides to bring the power down.

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