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Q.

Using suitable identity, find the value of:

Question Image

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a

100

b

86

c

14

d

72 

answer is A.

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Detailed Solution

Concept- The algebraic identities are often used to compute number products and other things. Algebraic Identities aid in simplification.
By using Question Image,
Question ImageQuestion Image When dividing both numerator and denominator by Question Image, we get
Question ImageHence, the correct answer is option 1.
 
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