Pranamika Subhalaxmi Shridhar's answer to Nameless 's Secondary 3 A Maths question.

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Pranamika Subhalaxmi Shridhar
Pranamika Subhalaxmi Shridhar's answer
1 answers (Tutor Details)
Bring out the 4^x so that you can substitute in u. Once you see a u^2, can identify the quadratic equation and solve from there :)