Paper 33 May June 2021 Pure Math III – 9709/33/M/J/21

Check out my complete solution here: » Full Solutions « Like and subscribe too! =) 1.     Expand ${(1 \ + \ 3x)}^{\frac{2}{3}}$ in ascending powers of $x$, up to and including the term in $x^3$, simplifying the coefficients. $$\tag*{[4]}$$ 2.     Solve the equation $4^x = 3 \ + \ {4}^{−x}$. …