CBSE Class 10 Maths (Standard) 2015 · Paper 30/2/1 · Question 21

Quadratic Equations 4 marks Medium

x = - 2

is a root of the equation

3 x^{2} + 7 x + p = 0

, find the values of

k

so that the roots of the equation

x^{2} + k (4 x + k - 1) + p = 0

are equal.

Answer

k = \frac{2}{3}

k = - 1

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