wt is the product of (x+y)2
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The product of x and y would be (8)(-1) = -8. by adding the two equations you get 2x = 16 so x = 8. then y = 7 - x = -1. Therefore xy = -8.
Apart from this Lothal is also famous for having the world's first Dockyard whereas Dholavira is remarkable for its monumental structures, aesthetic architecture and water harvesting system. Lothal is famous for the discovery of several ruins of Indus Valley Civilization.
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