Q4 Expand each of the following, using suitable identities (i) (x 2y 4z) 2 (ii) (2x – y z) 2 (iii) (–2x 3y 2z) 2 (iv) (3a – 7b – c) 2 (v) (–2xWe shall use the identity xy x y = x 2y 2 Here By applying in identity we get Hence the value of is (iv) The given expression is We have So we can express and in the terms of 100 as We shall use the identity xy x y = x 2y 2 Here By applying in identityCBSE NCERT Notes Class 9 Maths Polynomials Show Topics Class 9 Maths Polynomials Algebraic Identities Algebraic Identities Algebraic identity is an algebraic equation that is true for all values of the variables occurring in it ( x y) 2 = x2 2 xy y2 ( x – y) 2 = x2 – 2 xy y2 x2 – y2 = ( x y) ( x – y)
X Y 3 Identity Class 9 Novocom Top
