Home
Class 7
MATHS
What should be added to x y+y z+z x to g...

What should be added to `x y+y z+z x` to get ` x y-y z-z x ?`
(a)`-2x y-2y z-2z x` (b) `-3x y-y z-z x` (c)`-3x y-3y z-3z x` (d) `2x y+2y z+2z x`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • CONGRUENCE

    RD SHARMA ENGLISH|Exercise All Questions|51 Videos

Similar Questions

Explore conceptually related problems

What should be added to x y-3y z+4z x to get 4x y-3z x+4y z+7?

What should be subtracted from x+2y-3z to get 3x-2y +z ?

Add the following: (i) x – 3y – 2z , 5x + 7y – 8z , 3x – 2y + 5z

Using properties of determinants, prove that |{:(y + z ,z + x ,x + y ),(z + x ,x + y ,y + z),(x + y ,y + z,z + x ):}|=2 |{:(x, y, z),(y, z, x),(z, x, y):}|= - 2 (x^(3) + y^(3) + z^(3) - 3xyz)

The shortest distance between the lines 2x + y + z - 1 = 0 = 3x + y + 2z - 2 and x = y = z , is

Value of |[x+y, z,z ],[x, y+z, x],[y, y, z+x]|, where x ,y ,z are nonzero real number, is equal to a. x y z b. 2x y z c. 3x y z d. 4x y z

If x+y+z=8\ \ a n d\ \ \ x y+y z+z x=20 , find the value of x^3+y^3+z^3-3x y z

Find the product: (3x+2y+2z)\ \ (9x^2+4y^2+\ 4\ z^2-\ 6\ x y-4\ y z-6z x)

The lines x + y + z - 3 = 0 = 2x - y + 5z - 6 and x - y - z + 1 = 0 = 2x + 3y + 7z - k are coplanar then k equals

Prove: |(2y, y-z-x,2y),(2z,2z, z-x-y),( x-y-z,2x,2x)|=(x+y+z)^3

RD SHARMA ENGLISH-ALGEBRAIC EXPRESSIONS-All Questions
  1. Simplify each of the following algebraic expressions by removing gro...

    Text Solution

    |

  2. Simplify each of the following algebraic expressions by removing gro...

    Text Solution

    |

  3. Simplify each of the following algebraic expressions by removing gro...

    Text Solution

    |

  4. Simplify each of the following algebraic expressions by removing gro...

    Text Solution

    |

  5. Simplify each of the following algebraic expressions by removing gro...

    Text Solution

    |

  6. Simplify each of the following algebraic expressions by removing gro...

    Text Solution

    |

  7. Add the following : 2x^2y,-4x^2y,6x^2y,-5x^2y

    Text Solution

    |

  8. Which of the following is not a monomial?

    Text Solution

    |

  9. The sum of the coefficients in the monomials 3a^2b and -2a b^2 is

    Text Solution

    |

  10. The coefficient of x^2 in -5/3\ x^2y is equal to :- (a)-5/3 (b) -5/...

    Text Solution

    |

  11. If a ,\ b\ a n d\ c\ a r e\ respectively the coefficients of x^2 in...

    Text Solution

    |

  12. The sum of the coefficients in the terms of 2x^2y-3x y^2+4x y is (...

    Text Solution

    |

  13. The product of the coefficients of terms in -4/3a b^2+1/4b c^2+3c a^...

    Text Solution

    |

  14. If a\ a n d\ b are respectively the sum and product of coefficients ...

    Text Solution

    |

  15. If P=3x^3+3x^2+3x+3 and Q=3x^2-3x+3, then P-Q= (a)3x^3 (b) 3x^3+6x...

    Text Solution

    |

  16. The sum of the values of the expression 2x^2-2x+2 when x=-1 and x=1 ...

    Text Solution

    |

  17. What should be added to 3x^2+4 to get 9x^2-7? (a)6x^2-11\ (b) 6x^...

    Text Solution

    |

  18. How much is a^2-3a greater than 2a^2+4a ? (A) a^2-7a (B) a^2+7...

    Text Solution

    |

  19. How much is -2x^2+x+1 less than x^2+2x-3? (a) x^2+3x-2 (b) 3x^2+x-...

    Text Solution

    |

  20. What should be added to x y+y z+z x to get x y-y z-z x ? (a)-2x y-...

    Text Solution

    |