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If m , in Z and the equation mx^2 +(2...

If `m , in Z ` and the equation `mx^2 +(2m -1)x:(m-2)=0` has rational roos them m is of the form

A

`n(n+2), n in z`

B

`n(n+1),n in z`

C

`n(n-2),n in z`

D

none

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-QUADRATIC EXPRESSIONS-EXERCISE 1A (QUADRATIC EQUATIONS)
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  7. IF the roots of the equation ax ^2 +bx + c=0 are real and disti...

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  8. If the roots of ax ^2 + bx +c=0 are both positve , then

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  9. IF the roots of ax^2 +bx +c=0 are both negative and b < 0 then

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  10. IF the roots of ax^2+bx +c=0 are equal in magnitude but opposit...

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  11. if P , q, r are positive and are in A.P the roots of the quadrativ...

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  12. IF (1+k) tan ^2 x-4 tan x -1 + k=0 has real roots tan x1 and ...

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  13. IF 0 < a<b<c and the roots alpha , beta of the equation ax ...

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  14. if 0 < a < b> 0 nad c > 0 then both the roots of the equation 2...

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  15. IF p,q,in { 1,2,3.4} the number of equation of the form px^2 +q...

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  16. If the equation x^2 -2mx+7m-12 =0 has equal roots then m=

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  17. IF the roots of (3m +1) x^2 +2(m+1) x+m =0 are equal then m=

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  18. IF the roots of x^2-2(5 + 2k ) x+ 3 (7+10k) are equal then ...

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  20. IF (x-a)(x-b) +(x-b) (x-c) +(x-a)(x-c) =0 has equal roots then ...

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