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If a + b =1 and a ^(3) + b ^(3) + 3ab = ...

If `a + b =1 and a ^(3) + b ^(3) + 3ab = k,` then the value of k is :

A

1

B

3

C

5

D

7

Text Solution

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The correct Answer is:
A
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KIRAN PUBLICATION-ALGEBRA-Questions Asked In Previous SSC Exams (Type - II)
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  2. If p, q, r are all real numbers. Then ( p - q) ^(3) + (q - r) ^(3)...

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  3. If a + b =1 and a ^(3) + b ^(3) + 3ab = k, then the value of k is :

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  4. Out of the given responses, one of the factors of (a ^(2) - b^(2...

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

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  6. If ((x^(2))/( yz)) + (( y^(2))/( zx)) + (( z^(2))/( xy)) = 3 then ...

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  7. If p - 2q = 4 then the value of p^(3) - 8 q^(3) - 24 pq - 64 is

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  8. If x = 19 and y = 18 then the value of ( x^(2) + y^(2) + xy)/( x^(3...

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  9. If x + (1)/( x) = 2 and x is real , then the value of x^(17) + (...

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  10. Find (x+y+z)^(3)-(x+y-z)^(3)-(y+z-x)^(3) -(z + x-y)^(3)

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  11. If x = - 1 , then the value of (1)/( x^(99)) + (1)/( x^(98)) + (1)/...

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  12. If x = 3 sqrt( 2 + sqrt(3)) , then the value of x^(3) + (1)/( x^(3))...

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  13. If x = 3 sqrt(5) + 2 , then the value of x^(3) - 6 x ^(2) + 12 x ...

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  14. If x + y = a and xy = b^(2) then the value of x^(3) - x^(2) y - x...

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  15. If x + y = 15 then ( x - 10 )^(3) + ( y - 5)^(3) is

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  16. If x ^(2) + (1)/( x^(2)) = 66 then the value of ( x^(2) - 1 + 2x)/(...

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  17. If a^(2) + a + 1 = 0 then the value of a^(9) is

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  18. If x + (2)/(x) =1, then the value fo (x ^(2) + x + 2)/( x ^(2) (1-x)) ...

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  19. If x = k ^(3) - 3 k^( 2) and y = 1 - 3 k then for what value of k, ...

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  20. Find the value of sqrt (( x^(2) + y^(2) +z) ( x + y - 3 z))+ 3 sqrt(...

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