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Class 10MathematicsQuadratic EquationsNature of RootsHard
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If (x^2+2x+\lambda=0) has no real roots, what is the correct condition for (\lambda)?

Answer and explanation

Correct answer: (\lambda>1)

For no real roots, (D<0), so (4-4\lambda<0) gives (\lambda>1). In exams, keep strict inequality separate from equality.

Related tags

Quadratic EquationsNature Of RootsInequalityNature Of RootsQuadratic EquationsMathematicsClass 10 Mcq
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