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What is the nature of the roots of the equation \(4x^2-1=0\)?

Answer and explanation

Correct answer: two real and distinct

Here, \(a=4\), \(b=0\), and \(c=-1\). The discriminant is \(D=b^2-4ac=0^2-4(4)(-1)=16>0\), so the equation has two real and distinct roots. In fact, the roots are \(x=\frac{1}{2}\) and \(x=-\frac{1}{2}\). Exam tip: \(D>0\) always indicates two distinct real roots.

Related tags

Quadratic EquationsNature Of RootsDiscriminantMathematicsClass 10 Mcq

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