Description for Correct answer:
P (P - 3) = 4P - 12

\( \Large P^{2} - 3P = 4P - 12 \)

\( \Large P^{2} - 7P + 12 = 0 \)

\( \Large \because P = -\frac{(-7) \pm \sqrt{49 - 4 \times 12}}{2} \)

= \( \Large \frac{7 \pm \sqrt{1}}{2} = \frac{7 + 1}{2} , \frac{7 - 1}{2} \) = 4, 3