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- Question 7(vii-xi), Exercise 6.1
- =0\quad 2\neq 0\\ \end{align*} By using quadratic equation,\\ \begin{align*} n&=\dfrac{29\pm \sqrt{841+6048}
- Question 4, Exercise 6.3
- 2n+3&=0\quad \cdots(ii)\end{align*} Solving both equations simultaneously.\\ Multiply (ii) by 2 and subtrac