You are here
Ex 2.4, 4 (i) - Chapter 2 Class 9 Polynomials
Last updated at August 7, 2026 by Teachoo
Chapter 2 Class 9 Polynomials
Concept wise
- Definition
- Degree & Coefficient of a polynomial
- Value of a polynomial at a given point
- Verifying Zeroes of a polynomial
- Finding Zeroes of a polynomial
- Remainder Theoram
- Check if factor
- Factorisation by middle term
- Factorisation by factor formula
- Factorizing cubic equation
- Identity I - IV
-
Identity V
- Identity VI & VII
- Identity VIII
Transcript
Ex 2.4, 4 Expand each of the following, using suitable identities: (x + 2y + 4z)2 (x + 2y + 4z)2 Using (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ac Where a = x , b = 2y, c = 4z = x2 + (2y)2 + (4z)2 + 2(x) (2y) + 2(2y) (4z) + 2 (4z) (x) = x2 + 4y2 + 16z2 + 4xy + 16yz + 8xz
