Home
Class 14
MATHS
If a= 89, b= -69, c= 8 then the value of...

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

A

2

B

4

C

16

D

0

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ALGEBRAIC IDENTITIES

    LUCENT PUBLICATION|Exercise Exercise - 1B|28 Videos
  • ALGEBRAIC IDENTITIES

    LUCENT PUBLICATION|Exercise Exercise - 1B|28 Videos
  • ADVANCED TRIGONOMETRIC IDENTITIES

    LUCENT PUBLICATION|Exercise EXERCISE 13A|49 Videos
  • CENTRE OF TRIANGLE

    LUCENT PUBLICATION|Exercise EXERCISE-6B|8 Videos

Similar Questions

Explore conceptually related problems

If a=-2, b=-3, c = 2 then find the value of (ab)/(c) + 9 ?

If a + b + c = 0. then the value of a ^(2) (b + c) + b ^(2) (c + a) + c ^(2) (a + b) is :

For real a, b and c if a^(2) + b^(2) + c^(2) = ab + bc + ca , then find the value of (a + b + c)^(2) A. 9a^(2) B. 81 a^(2) C. 27 a^(2) D. 24 a^(2)

If a=7, b=5, c=3, then the value of a^2+b^2+c^2-a b-b c-c a i s -12 (b) 0 (c) 8 (d) 12

LUCENT PUBLICATION-ALGEBRAIC IDENTITIES -Exercise - 1A
  1. Value of (x-y)^(3) +(y-z)^(3) +(z-x)^(3) is

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  10. If a^(2) +b^(2) = x, ab = y then the value of (a^(4) +b^(4))/(a^(2) -a...

    Text Solution

    |

  11. If (a+b)x =a and (a+b) y = b then the value of (x^(2)+y^(2))/(x^(2)-y^...

    Text Solution

    |

  12. If x=(p+q)/(p-q) and y=(p-q)/(p+q) then the value of (x-y)/(x+y) is

    Text Solution

    |

  13. If x+(a)/(x) =1 then the value of (x^(3) -x^(2))/(x^(2) +x +a) in term...

    Text Solution

    |

  14. If ( xy)/( x + y) = a , ( xz)/( x + z) = b and ( yz)/( y + z) = c wh...

    Text Solution

    |

  15. HCF and LCM of two algebraic expressions are respectively (a + 1) an...

    Text Solution

    |

  16. If (x^(2)+(1)/(x^(2)))=p, then what is the value of (x^(3)+(1)/(x^(3))...

    Text Solution

    |

  17. If a+b+c=0, then what is the value of (a^(2)+b^(2)+c^(2))/((a-b)^(2)+(...

    Text Solution

    |

  18. If y=(x+(1)/(x)), then the expression x^(4) +x^(3) -4x^(2) +x +1=0 can...

    Text Solution

    |

  19. Value of (2+1) (2^(2) +1) (2^(4) +1) (2^(8) +1) (2^(16) +1) (2^(32) +1...

    Text Solution

    |

  20. HCF of polynomials x^(3)+3x^(2)y +2xy^(2) and x^(4) +6x^(3)y +8x^(2)y...

    Text Solution

    |