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Class 10MathematicsQuadratic EquationsNature of RootsHard
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For which (t) will (x^2-10x+t=0) have real and equal roots?

Answer and explanation

Correct answer: (t=25)

For equal roots, (D=0), so (100-4t=0) gives (t=25). In exams, (b^2=4ac) is a quick sign of equal roots.

Related tags

Quadratic EquationsNature Of RootsParameterNature Of RootsQuadratic EquationsMathematicsClass 10 Mcq
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