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What is the value of \(a\) in the equation \(5x^2-2x+9=0\)?

Answer and explanation

Correct answer: 5

In the standard form \(ax^2+bx+c=0\), \(a\) is the coefficient of \(x^2\). In the given equation the coefficient of \(x^2\) is 5, so \(a=5\). Option B (\(-2\)) is the coefficient of \(x\) (i.e. \(b\)), option C (9) is the constant term \(c\), and option D (0) is not a coefficient present here. Exam tip: identify the number directly in front of \(x^2\) to get \(a\) quickly.

Related tags

Quadratic EquationsCoefficientsStandard FormClass 10Introduction To Quadratic EquationsMathematicsClass 10 Mcq

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