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IF the roots of x^2-2(5 + 2k ) x+ 3...

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

A

4/2,1

B

`-1//2,1`

C

`2,1//2`

D

`2,-1//2`

Text Solution

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-QUADRATIC EXPRESSIONS-EXERCISE 1A (QUADRATIC EQUATIONS)
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  11. 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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  12. 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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  14. IF alpha , beta are the roots of the equation ax^2 + bx +c=0 ...

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

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  18. IF (1-p) is a root of quadratic equation X^2 +px +(1-p)=0 the...

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  19. IF one root of the equation x^2 +px +12=0 is 4, while the equat...

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  20. If x^(2)-6x+5=0 and x^(2)-12x+p=0 have a common root, then find p.

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