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Yogita Ingle 7 years, 1 month ago
Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions.
Example : Reaction of iron nails with copper sulphate solution.
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Yogita Ingle 7 years, 1 month ago
(a + b)2 = a2 + 2ab + b2
(2xy+ 5y)2 = (2xy)2 + 2 (2xy)(5y) + (5y)2
= 4x2y2 + 20xy2 + 25y2
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Yogita Ingle 7 years, 1 month ago
4Thank You