কোন দ্বিঘাত সমীকরণটি একটি মূল sqrt(-5)-1?
A. x2+2x+6=0
B. x2+x+3=0
C. x2+2x-6=0
D. x2+x-3=0
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সঠিক উত্তরঃ
A.
x2+2x+6=0
Explanation:
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