CBSE  /  Class 8  /  Maths  /  Factorisation

  • 1. 
    The factorisation of 3x² + 10x + 8 is

  • (3x + 4)(x + 2)
  • (3x - 4)(x - 2)
  • (3x + 4)(x - 2)
  • (3x - 4)(x + 2)

  • 2. 
    The factorisation of 3x² - 16x + 16 is

  • (x - 4)(3x - 4)
  • (x + 4)(3x + 4)
  • (x - 4)(3x + 4)
  • (x + 4)(3x - 4)

  • 3. 
    The factorisation of 6x² - 5x - 6 is

  • (2x - 3)(3x + 2)
  • (2x + 3)(3x + 2)
  • (2x - 3)(3x - 2)
  • (2x + 3)(3x - 2)

  • 4. 
    The factorisation of 6 - x - 2x² is

  • (2 + x)(3 - 2x)
  • (2 + x)(3 + 2x)
  • (2 - x)(3 - 2x)
  • (2 - x)(3 + 2x)

  • 5. 
    If x² - x - 42 = (x + k)(x + 6), then k =

  • 6
  • -6
  • 7
  • -7

  • 6. 
    The value of 3.5 × 3.5 - 2.5 × 2.5 is

  • -6
  • 6
  • 60
  • 1

  • 7. 
    If (x - \(\frac{1}{x}\))² = x² + a + \(\frac{1}{x^2}\) then a =

  • -2
  • 2
  • 2x
  • -2x

  • 8. 
    If x = 2, y = -1 then the value of x² -+ 4xy + 4y² is

  • 0
  • 1
  • -1
  • 2

  • 9. 
    The quotient of 28x² + 14x is

  • 2
  • 2x
  • x
  • x²

  • 10. 
    The quotient of 12a8b8 + (- a6b6) is

  • 3a²b²
  • 3a²b
  • 3ab²
  • -3a²b²
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