Q. If [√(a2 + b2 + ab)] + [√(a2 + b2 – ab)] = 1, then what is the value of (1 – a2 )(1 – b2 )?
A) 4/7
B) 1/4
C) 3/4
D) 5/4
✔ Correct Answer: 3/4
Exam Insight
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A) 4/7
B) 1/4
C) 3/4
D) 5/4
✔ Correct Answer: 3/4
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