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MCQ
Which of the following equations has 2 as a root?
Options
x2 – 4x + 5 = 0
x2 + 3x – 12 = 0
2x2 – 7x + 6 = 0
3x2 – 6x – 2 = 0
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Solution
2x2 – 7x + 6 = 0
Explanation:
If 2 is a root then substituting the value 2 in place of x should satisfy the equation.
(C) Given, 2x2 – 7x + 6 = 0
2(2)2 – 7(2) + 6 = 0
Here, x = 2 is a root of 2x2 – 7x + 6 = 0
Concept: Nature of Roots of a Quadratic Equation
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