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 8.1Expand 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. \( (2x-3)^6 \)