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Which of the following equations has 2 as a root? - Mathematics

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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
  Is there an error in this question or solution?

APPEARS IN

NCERT Mathematics Exemplar Class 10
Chapter 4 Quadatric Euation
Exercise 4.1 | Q 3 | Page 36
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