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

Example 1 - Chapter 14 Class 8 Factorisation - Part 2

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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

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.