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Ex 14.2, 3 (vii) Class 8 Maths - Factorise 5y^2 - 20y - 8z + 2yz

 

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Ex 14.2, 3 Factorise the expressions. (vii) 5𝑦^2 – 20y – 8z + 2yz 5𝑦^2 – 20y – 8z + 2yz = (5𝑦^2 – 20y) + (−8z + 2yz) Both have 5 and y as common factors Both have 2 and z as common factors Both have 2 and z as common factors = 5y (y − 4) + 2z (−4 + y) = 5y (y − 4) + 2z (y − 4) Taking (y − 4) as common, = (y − 4) (5y + 2z)

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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.