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Example 1 - Chapter 14 Class 8 Factorisation

Last updated at Dec. 26, 2018 by

Example 1 - Factorise 12a^2b + 15ab^2 - Chapter 14 Class 9

Example 1 - Chapter 14 Class 8 Factorisation - Part 2

Transcript

Example 1 Factorise 12π‘Ž^2b + 15γ€–π‘Žπ‘γ€—^2 12a^2b + 15ab^2 12a^2b = 12 Γ— a^2b = 2 Γ— 2 Γ— 3 Γ— a^2b = 2 Γ— 2 Γ— 3 Γ— a Γ— a Γ— b 15ab^2 = 15 Γ— ab^2 = 3 Γ— 5 Γ— ab^2 = 3 Γ— 5 Γ— a Γ— b Γ— b Now, 12ab^2 = 2 Γ— 2 Γ— 3 Γ— a Γ— a Γ— b 15ab^2 = 3 Γ— 5 Γ— a Γ— b Γ— b So, 3, a, b are common factors. 12ab^2 + 15ab^2 = 2 Γ— 2 Γ— 3 Γ— a Γ— a Γ— b + 3 Γ— 5 Γ— a Γ— b Γ— b = 3 Γ— a Γ— b (2 Γ— 2 Γ— a + 5 Γ— b) = 3ab (4a + 5b)

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.