Download 9th Class Math Exercise 4.5 Notes PDF – Difference of Squares (FBISE 2025)
Exercise 4.5 unleashes the lightning‑fast difference‑of‑squares rule: a2 − b2 = (a + b)(a − b). Our notes teach you to recognize disguised squares especially those tricky terms with coefficients and factor them in one line. Perfect practice for FBISE, BIE Karachi and BISE Gujranwala where examiners love this shortcut.
More Notes for Chapter 4
Exercise 4.4 Notes
Exercise 4.6 Notes
Misc Exercise 4 Notes
Full SLO‑based versions of these notes are available through this form.
