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The number of non-negative integral orde...

The number of non-negative integral ordered pair(s) `(x,y)` for which `(xy -7)^(2) =x^(2) +y^(2)` holds is greater than or equal to :

A

1

B

2

C

3

D

4

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The correct Answer is:
A, B, C, D
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VIKAS GUPTA (BLACK BOOK) ENGLISH-QUADRATIC EQUATIONS -EXERCISE (ONE OR MORE THAN ONE ANSWER IS/ARE CORRECT)
  1. Let f (x) =x ^(2) -4x +c AA x in R, where c is a real constant, then w...

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

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  3. If x satisfies |x-1| + |x-2|+|x-3|gt6, then : i)x ∈ (−∞,1) ii)x ∈...

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  4. If both roots of the quadratic equation ax ^(2)+x+b-a =0 are non real ...

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  5. If a,b are two numbers such that a ^(2) +b^(2) =7 and a ^(3) + b^(3) =...

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  6. The number of non-negative integral ordered pair(s) (x,y) for which (x...

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  7. If alpha, beta, gamma and delta are the roots of the equation x ^(4) -...

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

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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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  10. If the equation ax^(2) + bx + c = 0, a,b, c, in R have non -real ro...

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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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  12. The equation cos ^(2) x - sin x+lamda = 0, x in (0, pi//2) has roots t...

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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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  14. The number of non-negative integral ordered pair(s) (x,y) for which (x...

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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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  17. Solve : | x - 1| + |x - 2| + | x - 3 | gt 6

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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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  20. If the points ((a^3)/((a-1))),(((a^2-3))/((a-1))),((b^3)/(b-1)),(((b^2...

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