For what k does the equation (k – 1) x 2 + 2 (k + 1) x + k … | CGP Edu

Maths Quadratic Equations Mix Subjective Type

Published by: CGP EDU Academic Team

Published on: August 13, 2026

For what k does the equation (k – 1) x 2 + 2 (k + 1) x + k – 2 = 0 have equal roots?

Text Solution

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The correct answer is:

CHECK THE SOLUTION.

Sol. For equal roots, discriminant .
Given:

Condition:

Divide by 4:

Expand:

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