Ex 2.4, 10 (i) - Chapter 2 Class 9 Polynomials (Important Question)

Last updated at July 20, 2026 by

Ex 2.4, 10 (i) - Factorise 27y^3 + 125z^3 - Class 9 - Teachoo - Ex 2.4

 

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Ex2.5, 10 Factorise each of the following: (i) 27y3 + 125z3 27y3 + 125z3 = (3y)3 + (5z)3 From Ex 2.4,9 we know a3 + b3 = (a + b) (a2 – ab + b2) Where a = 3y , b = 5z = (3y + 5z) [ (3y)2 + (5z)2 – (3y) (5z)] = (3y + 5z) [ 9y2 + 25z2 – 15yz)

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