Using Identities, Evaluate the following: 1. 512 - 492 2. 103 X 104
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Answer:
(i)
Given expression is .
Use identity .
Simplifying the expression we get,
Therefore, value of the given expression is 200.
(ii)
Given expression is .
Use identity .
Simplifying the expression we get,
Therefore, value of the given expression is .
(iii)
Given expression is .
Use identity .
Simplifying the expression we get,
Therefore, value of the given expression is 1800.
(iv)
Given expression is .
Use identity .
Simplifying the expression we get,
Therefore, value of the given expression is .
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