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If a^(2) + b^(2) + 2b + 4a + 5 = 0 , the...

If `a^(2) + b^(2) + 2b + 4a + 5 = 0` , then the value of `(a - b)/( a + b)` is

A

3

B

`-3`

C

`(1)/(3)`

D

`-(1)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
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LUCENT PUBLICATION-ALGEBRAIC IDENTITIES -Exercise - 1A
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  2. IF (a )/( 1 - a) + (b)/( 1 - b) + (c)/(1 - c) = 1 then the value of ...

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  3. If a^(2) + b^(2) + 2b + 4a + 5 = 0 , then the value of (a - b)/( a + ...

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  4. If (x)/(( b - c) ( b + c - 2a)) = (y)/(( c - a)( c + a- 2 b)) = (z)/(...

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  5. If (x^(3) +3x)/(3x^(2)+1)=(189)/(61) then value of x is

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  6. If (x^(2)+y^(2)) (p^(2) +q^(2)) =(xp +yq)^(2) then

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  7. If (x)/(2x+y+z) =(y)/(x+2y+z) =(z)/(x+y+2z) then each terms is equal t...

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  8. If p^(2) (a^(2) +b^(2) +c^(2)) -2p (ab +bc +cd) +(b^(2) +c^(2) +d^(2))...

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  9. If b+c =10, c +a =20 , a+b =30 then value of a^(3) +b^(3) +c^(3) is

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  10. If b+c = 2x, c+a =2y and a +b =2z then value of a^(3) +b^(3) +c^(3) i...

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  11. If a+b +c =0 then value of a^(3) +b^(3) +c^(3) is

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  12. Value of (x-y)^(3) +(y-z)^(3) +(z-x)^(3) is

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  13. If a+b+c =p, abc =q and ab+bc +ca =0 then what is the value of a^(2) b...

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  14. If a= 89, b= -69, c= 8 then the value of 9(a+b)^(2) +49 c^(2) -42 (a+b...

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  15. If x=q+r +s, y = r +s -p and z= p+q +r then the value of x^(2) +y^(2)...

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  16. If x+y+z =10 , x^(2) +y^(2) +z^(2) =60 then value of xy+yz +zx is

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  17. If a ^(2) + b ^(2) = 2 and c^(2) + d ^(2) =1, then the value of (ad - ...

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  18. (x-a) (x-b) (a-b) +(x-b) (x-c) (b-c) +(x -c) (x -a) (c-a) is equal to...

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  19. Which one of the following is not a factor of this polynomial x^(8) + ...

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  20. A factor of a^(4) -11 a^(2) b^(2) +b^(4) is

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