Tough times don’t last. Tough people do. – Robert H. Schuller

Introduction to Binomial Theorem

$$\left ( a+b \right )^n =\sum_{r=0}^{n}{^n}C_r a^{n-r} b^r$$

Pascal Triangle and Derivation for Binomial Theorem

NCERT Exercise 8.1

Expand each of the expressions in Exercises 1 to 5.

Question 1. $$(1-2x)^5$$

Question 2. $$\left ( \frac{2}{x} – \frac{x}{2} \right )^5$$

Question 3. $$(2x-3)^6$$