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CBSE  /  Class 8  /  Maths  /  Factorisation
  • 1. 
    The factorisation 1 + 16x + 64x² is

  • (1 - 8x)²
  • (1 + 8x)²
  • (8 - x)²
  • (8 + x)²
  • 2. 
    The factorisation x² + x + 14 is

  • (x2 - 1)²
  • (x2 + 1)²
  • (x + 12
  • (x - 12
  • 3. 
    The value of 99² is

  • (90)² + 2(90)(9) + (9)²
  • (90)² - 2(90)(9) + (9)²
  • (90)² + (9)²
  • none of these
  • 4. 
    The value of 49² is

  • (50)² - 2(50)(1) + (1)²
  • (50)² + 2 (50) (1) + (1)²
  • (50)² - (1)²
  • (50)² + (1)²
  • 5. 
    The factorisation of (x2y2 -2+y2x2) x ≠ 0, y ≠ 0 is

  • (xy+yx
  • (xy-yx
  • (xy-1)²
  • (xy+1)²
  • 6. 
    The value of 0.73×0.73×0.27×0.270.730.27 is

  • 1
  • 0
  • 0.73
  • 0.27
  • 7. 
    The factorisation of x² - 9 is

  • (x - 3)²
  • (x + 3)²
  • (x + 3)(x - 3)
  • none of these
  • 8. 
    The factorisation of 36x²y² - 1 is

  • (6xy - 1)(6xy + 1)
  • (6xy - 1)²
  • (6xy + 1)²
  • (6 + xy)²
  • 9. 
    The value of 0.564×0.564×0.436×0.4360.5640.436 is

  • 0
  • 1
  • -1
  • none of these
  • 10. 
    The value of (0.68)² - (0.32)² is

  • -1
  • 0
  • 1
  • 0.36
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