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[ The number of real solutions of x^(2)-4|x|-2=0 is [ (a) 1, (b) 2 (c) 3, (d) 4]]

A

4

B

2

C

1

D

0

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The correct Answer is:
D
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MCGROW HILL PUBLICATION-QUADRATIC EQUATIONS-Exercise ( Level 1 (single correct answer type questions))
  1. Suppose 0 lt b lt c and f(x) = (x^(2) - bc)/( 2x - (b + c)) , x in R,...

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  2. If alpha and beta are the roots of x^(2) +px+q=0 and gamma , delt...

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  3. [ The number of real solutions of x^(2)-4|x|-2=0 is [ (a) 1, (b) 2 (c)...

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  4. The number of real solutions of x^(2) - 3|x| + 2 = 0 is

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  5. If 2 + sqrt(5) is root of x^(2) - px + q = 0 where p and q are real...

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  6. If the quadratic equation 2x(2) - px + q = 0 where p and q are real, ...

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  7. if a,b, c, d and p are distinct real number such that (a^(2) + b^(2)...

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  8. The number of values of a for which equations x^3+a x+1=0a n dx 64+a x...

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  9. The number of values of a for which equations x^3+a x+1=0a n dx 64+a x...

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  10. The roots of the equation |x^2-x-6|=x+2 are

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  11. The number of real roots of the equation |x|^(2) -3|x| + 2 = 0, is

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  12. The least value of n in N for which (n - 4)x^(2) + 8x + n + 2 gt 0 AA ...

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  13. Let f(x) be a quadratic expression such that f(x) lt 0 AA x in R . If ...

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  14. If x + 1 is a factor of x^(4) + (p - 3) x^(3) - (3p - 5) x^(2) + (2p -...

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  15. If both the roots of the equation are negative x^2-(p-4)x+2e^(2lnp)-4=...

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  16. [ Let f and g be two real valued functions and S={x|f(x)=0} and T={x|g...

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  17. [ If domain of f(x)=sqrt(x^(2)+bx+4) is R, then maxi- mum possible in...

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  18. If p in (-1, 1) , then roots of the quadratic equation (p - 1)x^(2) + ...

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  19. If a,b,c are positive real numbers, then the number of positive real r...

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  20. If the roots of the equation x^(2) + p^(2) = 8x + 6p are real, then p ...

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