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What is the sign of D for the quadratic equation 5x²−2x+3=0?

Answer and explanation

Correct answer: D<0

For a quadratic equation ax²+bx+c=0, the discriminant is D=b²−4ac. Comparing 5x²−2x+3=0 with the standard form gives a=5, b=−2, and c=3. Substitution yields D=(−2)²−4(5)(3)=4−60=−56. Since −56 is less than zero, the discriminant is negative, so option C is correct. This sign also indicates that the equation has no real roots and two non-real complex conjugate roots. Option A would require the calculated value to be positive, while option B would require it to be exactly zero. Option D is simply not the result of the discriminant formula. The requested conclusion follows directly from the sign of −56.

Related tags

Quadratic EquationsDiscriminantNature Of RootsReal RootsNature Of RootsQuadratic EquationsMathematicsClass 10 Mcq

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