Lessons

General Aptitude
12.1 Surds and Indices - General Questions

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Q.

View Answer

Correct choice: B

Explanation:

Given Exp.
= x(b - c)(b + c - a) . x(c - a)(c + a - b) . x(a - b)(a + b - c)
 
= x(b - c)(b + c) - a(b - c)  .  x(c - a)(c + a) - b(c - a)
   .  x(a - b)(a + b) - c(a - b)
 
= x(b2 - c2 + c2 - a2 + a2 - b2)  .   x-a(b - c) - b(c - a) - c(a - b)
 
= (x0 x x0)
 
= (1 x 1) = 1.
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