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IF p,q,in { 1,2,3.4} the number of e...

IF p,q,`in` { 1,2,3.4} the number of equation of the form `px^2 +qx +1=0` having real roots is

A

15

B

9

C

7

D

8

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-QUADRATIC EXPRESSIONS-EXERCISE 1A (QUADRATIC EQUATIONS)
  1. IF 0 < a<b<c and the roots alpha , beta of the equation ax ...

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

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

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

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

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

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  7. If the quadratic expression x^2 -(a-1) x+ (a+ (1)/(4) ) will be...

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

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  9. If c^(2) ne ab and the roots of (c^(2)-ab)x^(2)-2(a^(2)-bc)x+(b^(2)-ac...

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  10. The roots of the equation ( a-b) x^2 +(b-c) x+ (c-a) =0 are

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  11. The roots of the equation a ( b-c) x^2 -b(c-a) x+c(a-b)=0 are

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  12. If p(q-r) x^2 +q(r-p) x+r(p-q) =0 has equal roots then 2/q =

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  13. IF the roots of (b-c) x^2+ (c-a) x+ (a-b) =0 are equal then ...

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  14. IF the roots of a(b-c)x^2+b (c-a) x+c (a-b)=0 are equal then a, ...

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  15. If the roots of (a^2+b^2 ) x^2 -2b(a+c)x+(b^2 +c^2 ) =0 are equal...

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  16. IF the sum of the roots of ax^2+bx+c=0 is equal to the sum of the squa...

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  17. IF alpha , beta are the roots of the equation ax^2 + bx +c=0 ...

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  18. IF 3+ 4i is a root of the equation x^2 +px +q=0 then

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  19. IF 3+i is a root of the equation x^2 + ax + b=0 then a=

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  20. IF one root of the quadratic equation ax^2+bx +c=0 is 3-4i the...

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