Determine the nature of roots of the equation x2+2x√3+3=0.
A
Real and distinct
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B
Non-real and distinct
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C
Real and equal
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D
Non-real and equal
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Solution
The correct option is B Real and equal The nature of the roots can be determined from the discriminant b2−4ac ∴b2−4ac=(2√3)2−(4×1×3) ⇒b2−4ac=12−12 ⇒b2−4ac=0 ∵b2−4ac=0 There are two real and equal roots.