1. Chapter 12 Class 8 Factorisation
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Example 16 - Chapter 12 Class 8 Factorisation

Last updated at Dec. 16, 2024 by Teachoo

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Example 16 Divide z (5๐‘ง^2 โ€“ 80) by 5z (z + 4) We first factorise z(ใ€–5๐‘งใ€—^2โˆ’ 80) = z(ใ€–5๐‘งใ€—^2โˆ’ (16 ร— 5)) Taking 5 common, = z ร— 5 (๐‘ง^2โˆ’ 16) = 5z (๐‘ง^2 โˆ’ 4^2) Using ๐‘Ž^2 โˆ’ ๐‘^2 = (a + b) (a โˆ’ b) Here ๐‘Ž= z and b = 4 = 5z (z + 4) (z โˆ’ 4) Dividing (๐‘ง (5๐‘ง^2 โˆ’ 80))/(5๐‘ง (๐‘ง + 4)) = (5๐‘ง (๐‘ง + 4) (๐‘ง โˆ’ 4))/(5๐‘ง (๐‘ง + 4)) = 5๐‘ง/5๐‘ง ร— ((๐‘ง + 4))/((๐‘ง + 4)) ร— (z โˆ’ 4) = 1 ร— 1 ร— (z โˆ’ 4) = (z โˆ’ 4)
  1. Chapter 12 Class 8 Factorisation
  2. Serial order wise

    3. Examples

    Identify and correct errors in the sentences →
Identify and correct errors in the sentences →
Chapter 12 Class 8 Factorisation
Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo