Q.

What is the value of (438) 2 (437) 2  ?


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a

867

b

875

c

897

d

888 

answer is B.

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Detailed Solution

Write the given expression [ (438) 2 (437) 2 ]  .
Use the identity,
a2-b2=(a+b)(a-b)
Simplify the given expression using the identity.
[ (438) 2 (437) 2 ] (438 + 437)(438-437) 875 × 1 875  
Hence, the value of [ (438) 2 (437) 2 ]   is 875.
Therefore, option 2 is correct.
 
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