Exemplar exercise problems I — task. Mathematics CBSE, Class 10.

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1. Which of the following equations has \(2\) as a root?

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

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

\(2\)
\(-2\)
\(\frac{1}{4}\)
\(\frac{1}{2}\)

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