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If both roots of the quadratic equation `ax ^(2)+x+b-a =0` are non real and `b gt -1,` then which of the following is/are correct ? (a) `a gt 0` (b) `a lt b` (c) `3a gt 2+ 4b` (d) `3a lt 2+ 4b`

A

`a gt 0`

B

`a lt b`

C

`3a gt 2+ 4b`

D

`3a lt 2+ 4b`

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A, B
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VIKAS GUPTA (BLACK BOOK) ENGLISH-QUADRATIC EQUATIONS -EXERCISE (ONE OR MORE THAN ONE ANSWER IS/ARE CORRECT)
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  9. If a,b,c in R, then for which of the following graphs of the quadrati...

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  11. If alpha and beta are the roots of the equation ax ^(2) + bx + c=0,a,b...

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  13. If the equation ln (x^(2) +5x ) -ln (x+a +3)=0 has exactly one solutio...

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  15. If a lt 0, then the value of x satisfying x ^(2)-2a|x-a| -3a ^(2)=0 i...

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  16. If 0 lt a lt b lt c and the roots alpha,beta of the equation ax^2 +...

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  18. The value of 'k' for which roots of the equation 4x^2-2x+k=0 are comp...

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  19. Let alpha , beta, gamma, delta are roots of x ^(4) -12x ^(3) +lamda x ...

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