Ex 1.2, 4 Starting from (–1) × 5, write various products showing some pattern to show (–1) × (–1) = 1. −1 × 5 = −5 −1 × 4 = −4 −1 × 3 = −3 −1 × 2 = −2 −1 × 1 = −1 −1 × 0 = 0 −1 × −1 = 1

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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.

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