Class 9 Maths Chapter 2 Exercise 2.1 NCERT Solutions 🔥 | Ganita Manjari Linear Polynomials
Class 9 Maths Chapter 2 Linear Polynomials (Ganita Manjari) - Complete Exercise 2.1 NCERT Solutions! In this video, Sachin Sir solves every single question from Exercise 2.1 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 2.1! 📌 Timestamps / Question Chapters: 00:00 - Introduction & Key Concepts for Ex 2.1 01:00-Expression vs Equations 01:50-Basic Terminologies 04:10- What is Polynomial? 05:30 - Which of them is a polynomial? 07:30-Terms of a Polynomial 08-45- Monomial, Binomial, Trinomial 09:30-Degree of a Polynomial 10:30-Types of Degree Based on Degree 13:05-Raju went to a shop where there were sealed boxes of different colours on sale. The shop owner told him that the red boxes have 4 pens each and the blue boxes have 5 pencils each. Now, if Raju bought x red boxes and y blue boxes, how can he quickly figure out the total quantity of pens and pencils? Also, if he got 3 extra pens free, how many pens and pencils did he get altogether? 17:11- A rectangular garden of length l metres and width w metres has to be fenced and decorated. A wire fence is to be laid along the length costing `100 per metre and a wooden fence is to be built along the width costing `80 per metre. Special seeds have to be sown throughout the garden which will cost `50 per square metre? 21:16- Can you identify the terms, variables and coefficients of this algebraic expression? 22:20- How is it different from the algebraic expression in Example 1? 23:35-A wire of length 20 cm is bent in different ways to form rectangles. For example, we can have a rectangle with length 7 cm and width 3 cm. We can also have one of length 5.5 cm and width 4.5 cm.(Think of a few more ways of forming such rectangles.) Can you write an expression for the area of such rectangles? 27:33-Can you identify the terms, variables and coefficients of this algebraic expression? 28:09-Can you point out any similarity or difference between the algebraic expressions obtained in Examples 1 and 3? 29:42-Exercise2.1-Q-1. Find the degrees of the following polynomials: (i) 2x2– 5x + 3 (ii) y3+ 2y – 1 (iii) – 9 (iv) 4z – 3 30:53-Q-2: Write polynomials of degrees 1, 2 and 3 31:35-Q-3: What are the coefficients of x2 and x3 in the polynomial x4 – 3x3 + 6x2 – 2x + 7? 32:07-Q-4: What is the coefficient of z in the polynomial 4z3 + 5z2– 11? 32:49-Q-5: What is the constant term of the polynomial 9x3 + 5x2 – 8x –10? 33:05- Thankyou ! 📲 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
