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JEE Previous Year Question

$If A = (12 - 1 - 102120) and B = (- 3 - 2422 - 1 - 203), then A^{2} =$

Topic: JEE PYQ

Answer: C. Full step-by-step solution below.

A $A - B$
B $B - A$
C $A + B$
D $B^{2}$

Correct answer: C

Solution

(c) A = (12 - 1 - 102120), B = (- 3 - 2422 - 1 - 203) A^{2} = (- 203121 - 123) and A + B = (- 203121 - 123) ∴ A^{2} = A + B .

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