9th Math New Book 2025 Exercise 1.2 (PCTB)
Here the complete solution of Exercise 1.2 from the new Math 9th syllabus, designed by the Punjab Curriculum and Textbook Board (PCTB), Lahore. 1. Rationalize the denominator (i) \( \frac{13}{4 + \sqrt{5}} \) \[\frac{13}{4 + \sqrt{5}} \times \frac{4 – \sqrt{5}}{4 – \sqrt{5}} = \frac{13(4 – \sqrt{5})}{16 – 5} = \frac{13(4 – \sqrt{5})}{11} = \frac{52}{11} –…