# Ex 14.3, 5 (ii) - Chapter 14 Class 8 Factorisation

Last updated at Dec. 26, 2018 by Teachoo

Last updated at Dec. 26, 2018 by Teachoo

Transcript

Ex 14.3, 5 Factorise the expressions and divide them as directed. (ii) (๐^2 โ 14m โ 32) รท (m + 2) We first factorise ๐^2โ14๐โ32 By middle term splitting, = ๐^2 + 2m โ 16m โ 32 = (๐^2+2๐) โ (16๐+32) = m (m + 2) โ 16 (m + 2) Taking (m + 2) common, = (m + 2) (m โ 16) Splitting the middle term We need to find two numbers whose Sum = โ14 Product = โ32 So, we write โ14m = 2m โ 16m Dividing (๐^2โ14๐+32)รท(๐+2) = (๐^2 โ14๐ โ32)/((๐ + 2)) = ((๐ + 2) (๐ โ 16))/((๐ + 2)) = ((๐ + 2))/((๐ + 2)) ร (m โ 16) = (๐ โ 16)

Ex 14.3

Ex 14.3, 1 (i)

Ex 14.3, 1 (ii)

Ex 14.3, 1 (iii)

Ex 14.3, 1 (iv)

Ex 14.3, 1 (v) Important

Ex 14.3, 2 (i)

Ex 14.3, 2 (ii) Important

Ex 14.3, 2 (iii) Important

Ex 14.3, 2 (iv)

Ex 14.3, 2 (v)

Ex 14.3, 3 (i)

Ex 14.3, 3 (ii)

Ex 14.3, 3 (iii) Important

Ex 14.3, 3 (iv)

Ex 14.3, 3 (v) Important

Ex 14.3, 4 (i)

Ex 14.3, 4 (ii)

Ex 14.3, 4 (iii) Important

Ex 14.3, 4 (iv)

Ex 14.3, 4 (v)

Ex 14.3, 5 (i)

Ex 14.3, 5 (ii) Important You are here

Ex 14.3, 5 (iii) Important

Ex 14.3, 5 (iv) Important

Ex 14.3, 5 (v)

Ex 14.3, 5 (vi)

Ex 14.3, 5 (vii) Important

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.