Class 9 Maths Chapter 2 Exercise 2.2 NCERT Solutions 🔥 | Ganita Manjari Linear Polynomials | Sa
Class 9 Maths Chapter 2 Linear Polynomials (Ganita Manjari) - Complete Exercise 2.2 NCERT Solutions! In this video, Sachin Sir solves every single question from Exercise 2.2 step-by-step with simple, easy-to-understand explanations. Whether you are stuck on a difficult question or revising for your upcoming school test, this video will give you complete clarity on Exercise 2.2! 📌 Timestamps / Question Chapters: 00:00 - Introduction & Key Concepts for Ex 2.2 01:05-Example 4 : The perimeter of a square of side x is 4x, which is a linear polynomial in the variable x. 02:17- Question : Find the perimeter of squares with sides 1 cm, 1.5 cm, 2 cm, 2.5 cm and 3 cm. What will happen to the perimeters if the sides increase by 0.5 cm? 06:07 - Exmple 5 : A chess club charges a joining fee of `200 plus `50 for every match played. The following table shows the amount a player will have to pay as the number of matches varies. 08:58 - Question : If a player paid `750, how many matches did he play? 10:11 - Example 6 : The sum of two numbers is 64. One of the numbers is 10 more than the other. What are the two numbers? 13:08 - Question : We have learnt that to evaluate the value of an algebraic expression, we substitute a value of the variable in the given expression. Consider Example 3, where the wire is bent to form a rectangle. Here, the area of the rectangle, 10x – x2, is a function of x. Can you interpret this as an input-output process? What value does the expression take when x = 6 cm? 13:55 - Exercise 2.2- Q1 : Find the value of the linear polynomial 5x – 3 if: (i) x = 0 (ii) x = –1 (iii) x = 2 15:21 - Exercise 2.2-Q2. Find the value of the quadratic polynomial 7s2 – 4s + 6 if: (i) s = 0 (ii) s = –3 (iii) s = 4 17:50 - Exercise 2.2-Q3. The present age of Salil’s mother is three times Salil’s present age. After 5 years, their ages will add up to 70 years. Find their present ages. 20:41 - Exercise 2.2-Q4. The difference between two positive integers is 63. The ratio of the two integers is 2:5. Find the two integers. 24:26 - Exercise 2.2-Q5. Ruby has 3 times as many two-rupee coins as she has five rupee-coins. If she has a total `88, how many coins does she have of each type? 28:05 - Exercise 2.2-Q6. A farmer cuts a 300 feet fence into two pieces of different sizes.The longer piece is four times as long as the shorter piece. How long are the two pieces? 30:37 - Exercise 2.2-Q7. If the length of a rectangle is three more than twice its width and its perimeter is 24 cm, what are the dimensions of the rectangle? 📲 Join our Telegram Channel for FREE PDF Notes & NCERT Solutions: https://t.me/fulltayari910 📲 Download Full Tayari App: https://fulltayari.akamai.net/in/new-... If this video helped you solve your homework or test preparation, make sure to LIKE, SHARE with your friends, and SUBSCRIBE for complete Class 9 Maths, Science & SST lectures! #Class9Maths #GanitaManjari #Exercise21Class9 #LinearPolynomials #Class9MathsChapter2 #NCERTSolutions #MathsBySachinSir #FullTayari #AadhaarBatch
