CBSE  /  Class 8  /  Maths  /  Algebraic Expressions and Identities

  • 1. 
    The sum of 8pq and -17 pq is

  • pq
  • 9pq
  • -9pq
  • -pq

  • 2. 
    The sum of 5x², -7x², 8x², 11x² and -9x² is

  • 2x²
  • 4x²
  • 6x²
  • 8x²

  • 3. 
    The sum of x² - y², y² - z² and z² - x² is

  • 0
  • 3x²
  • 3y²
  • 3z²

  • 4. 
    What do you get when you subtract -3xy from 5xy?

  • 3xy
  • 5xy
  • 8xy
  • xy

  • 5. 
    The result of subtraction of 7x from 0 is

  • 0
  • 7x
  • -7x
  • x

  • 6. 
    The result of subtraction of 3x from -4x is

  • -7x
  • 7x
  • x
  • -x

  • 7. 
    The product of 4mn and 0 is

  • 0
  • 1
  • mn
  • 4 mn

  • 8. 
    The product of 5x and 2y is

  • xy
  • 2xy
  • 5xy
  • 10xy

  • 9. 
    The product of 7x and -12x is

  • 84x²
  • -84x²
  • x²
  • -x²

  • 10. 
    The area of a rectangle whose length and breadth are 9y and 4y² respectively is

  • 4y³
  • 9y³
  • 36y³
  • 13y³
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