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Ex 8.3, 1 Carry out the multiplication of the expressions in each of the following pairs. (i) 4𝑝, 𝑞 + 𝑟 4𝑝 × (𝑞+𝑟) = (4𝑝 × 𝑞)+(4𝑝 × 𝑟) = 𝟒𝒑𝒒+𝒑𝒓 Ex 8.3, 1 Carry out the multiplication of the expressions in each of the following pairs. (ii) 𝑎𝑏, 𝑎−𝑏 𝑎𝑏 × (𝑎−𝑏) = (𝑎𝑏 × 𝑎)−(𝑎𝑏×𝑏) = (𝑎 × 𝑎)𝑏−𝑎(𝑏 × 𝑏) = 𝒂^𝟐 𝒃−𝒂𝒃^𝟐 Ex 8.3, 1 Carry out the multiplication of the expressions in each of the following pairs. (iii) 𝑎 + 𝑏, 7𝑎^2 𝑏^2 (𝑎+𝑏) × 7𝑎^2 𝑏^2 = (𝑎 × 7𝑎^2 𝑏^2 )+(𝑏 × 7𝑎^2 𝑏^2 ) = 𝟕𝒂^𝟑 𝒃^𝟐+𝟕𝒂^𝟐 𝒃^𝟑 Ex 8.3, 1 Carry out the multiplication of the expressions in each of the following pairs. (iv) 𝑎^2− 9, 4𝑎 (𝑎^2− 9)×4𝑎 = (𝑎^2 × 4𝑎)−(9 × 4𝑎) = 𝟒𝒂^𝟑−𝟑𝟔𝒂 Ex 8.3, 1 Carry out the multiplication of the expressions in each of the following pairs. (v) 𝑝𝑞+𝑞𝑟+𝑟𝑝, 0 (𝑝𝑞+𝑞𝑟+𝑟𝑝)×0 = (𝑝𝑞 × 0)+(𝑞𝑟 × 0)+(𝑟𝑝 × 0) = 0+0+0 = 𝟎

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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