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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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VK JAISWAL-QUADRATIC EQUATIONS -EXERCISE (COMPREHENSION TYPE PROBLEMS)
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  2. If alpha, beta the roots of equation (k + 1 )x ^(2) -(20k +14) x + 91...

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  3. If alpha, beta the roots of equation (k + 1 )x ^(2) -(20k +14) x + 91...

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  12. Let f (x) be a polynomial of degree 5 with leading coefficient unity,...

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  16. Let P(x) be quadratic polynomical with real coefficient such tht for a...

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