Question

Given that (p-q)^2.x^2 + 2.(p^2-q^2).x + k = 0 has real and equal roots , find k .

Answer 1

Answer:

(A) b

2

−4ac=0

[(2(p

2

−q

2

))

2

]−4[(p−q)

2

k]=0

[4(p−q)

2

(p+q)

2

]−4[(p−q)

2

k]=0

(p+q)

2

−k=0

k=(p+q)

2

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Answer 2

Answer:

Hope this answer helps you.