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Which of the following quadratic equations represents the coefficients a = 3, b = -4, c = -2?

Answer and explanation

Correct answer: \(3x^2-4x-2=0\)

Using the standard form \(ax^2+bx+c=0\) and substituting \(a=3,b=-4,c=-2\) yields \(3x^2-4x-2=0\), so A is correct. The closest distractor B has the sign of \(b\) reversed (it shows \(+4x\)), making it incorrect. Options C and D change the positions or values of the coefficients. Exam tip: always substitute coefficients into \(ax^2+bx+c\) and carefully note the sign of \(b\).

Related tags

Quadratic EquationsCoefficientsStandard FormForming EquationsIntroduction To Quadratic EquationsMathematicsClass 10 Mcq

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