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For real numbers x and y, if `x^2+xy-y^2+2x -y+1=0`, then (a) y can not be between 0 and `8/5` (b) y can not be between `-8/5 and 8/5` (c) y cannnot be between `-8/5 and 0`(d) y cannot be between `-16/5 and 0`

A

a can not be between `0 and 8/5`

B

y can not be between `-8/5 and 8/5`

C

you can not be between `-8/5 and 0`

D

y can not be between `-16/5 and 0`

Text Solution

Verified by Experts

The correct Answer is:
C
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VK JAISWAL-QUADRATIC EQUATIONS -EXERCISE (SUBJECTIVE TYPE PROBLEMS)
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  12. The number of negative intergral values of m for which the expression ...

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  14. The smallest value of k for which both the roots of the equation x^2-8...

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  15. If x ^(2) -3x+2 is a factor of x ^(4) -px ^(2) +q=0, then p+q=

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  18. Find the number of integral vaues of 'a' for which the range of functi...

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  19. When x ^(100) is divided by x ^(2) -3x +2, the remainder is (2 ^(k +1)...

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  20. Let p (x) be a polynomial equation of least possible degree, with rati...

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  21. The range of values k for which the equation 2 cos ^(4)x-sin ^(4)x +k=...

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