Short Quiz

Question 1 of 5

NCERT Exemplar

Which of the following equations has 2 as a root?

A \(x^2-4 x+5=0\) B \(x^2+3 x-12=0\) C \(2 x^2-7 x+6=0\) D \(3 x^2-6 x-2=0\)

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Question 2 of 5

NCERT Exemplar

Which one of the following is not a quadratic equation?

A \(\quad(x+2)^2=2(x+3)\) B \(\quad x^2+3 x=(-1)(1-3 x)^2\) C \(\quad(x+2)(x-1)=x^2-2 x-3\) D \(\quad x^3-x^2+2 x+1=(x+1)^3\)

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Question 3 of 5

NCERT Exemplar

Which of the following equations has the sum of its roots as 3 ?

A \(2 x^2-3 x+6=0\) B \(-x^2+3 x-3=0\) C \(\sqrt{2} x^2-\frac{3}{\sqrt{2}} x+1=0\) D \(3 x^2-3 x+3=0\)

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Question 4 of 5

NCERT Exemplar

If \(\frac{1}{2}\) is a root of the equation \(x^2+k x-\frac{5}{4}=0\), then the value of \(k\) is

A 2 B -2 C \(\frac{1}{4}\) D \(\frac{1}{2}\)

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Question 5 of 5

NCERT Exemplar

The quadratic equation \(2 x^2-\sqrt{5} x+1=0\) has

A two distinct real roots B two equal real roots C no real roots D more than 2 real roots

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Class 6