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Last updated at Dec. 26, 2018 by Teachoo
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Ex 14.4, 13 Find and correct the errors in the following mathematical statements. (2a + 3b) (a โ b) = 2๐^2 โ 3๐^2 (2a + 3b) (a โ b) = 2๐^2 โ 3๐^2 Solving L.H.S : (2a + 3b) (a โ b) = 2a (a โ b) + 3b (a โ b) = (2a ร a) โ (2a ร b) + (3b ร a) โ (3b ร b) = ใ2๐ใ^2 โ 2ab + 3ba โ ใ3๐ใ^2 = ใ2๐ใ^2 โ 2ab + 3ab โ ใ3๐ใ^2 Taking ab common = ใ2๐ใ^2 + ab (โ2 + 3) โ ใ3๐ใ^2 (Since 3ba = 3ab) = ใ2๐ใ^2 + ab โ ใ3๐ใ^2 โด (2a + 3b) (a โ b) = ใ๐๐ใ^๐ + ab โ ใ๐๐ใ^๐ is the correct statement
Ex 14.4
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Ex 14.4, 13 Important You are here
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