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If alpha, beta the roots of equation (k...

If `alpha, beta ` the roots of equation `(k + 1 )x ^(2) -(20k +14) x + 91k+40 =0, (alpha lt beta ) k lt 0,` then answer the following questions.
The larger root `(beta)` lie in the interval :

A

(4,7)

B

(7,10)

C

(10,13)

D

None of these

Text Solution

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The correct Answer is:
C
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