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Ex 1.5,2 - Chapter 1 Class 9 Number Systems - Part 2

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Ex 1.5, 2 Simplify each of the following expressions: (ii) (3 + 3) (3 3) (3 + 3) (3 3) We know that, (a + b) (a-b) = a2 b2 Putting a = 3, b = 3 = (3)2 ( 3)2 = 9 3 = 6

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