CBSE  /  Class 8  /  Maths  /  Factorisation

  • 1. 
    The factorisation of x² + 8x + 16 is

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

  • 2. 
    The factorisation of 4y² - 12y + 9 is

  • (2y + 3)²
  • (2y - 3)²
  • (3y + 2)²
  • (3y - 2)²

  • 3. 
    The factorisation of 49p² - 36 is

  • (7p + 6)(7p - 6)
  • (6p + 7)(6p - 7)
  • (7p + 6)²
  • (7p - 6)²

  • 4. 
    The factorisation of y² - 7y + 12 is

  • (y + 3)(y + 4)
  • (y + 3)(y - 4)
  • (y - 3)(y + 4)
  • (y - 3)(y - 4)

  • 5. 
    The factorisation of z² - 4z - 12 is

  • (z + 6)(z + 2)
  • (z - 6)(z - 2)
  • (z - 6)(z + 2)
  • (z + 6)(z - 2)

  • 6. 
    The factorisation of am² + bm² + bn² + an² is

  • (a + b)(m² - n²)
  • (a + b)(m² + n²)
  • (a - b)(m² + n²)
  • (a - b)(m² - n²)

  • 7. 
    The factorisation of (lm + l) + m + 1 is

  • (l + 1)(m + 1)
  • (l - 1)(m - 1)
  • (l + 1)(m - 1)
  • (l - 1)(m + 1)

  • 8. 
    The factorisation of (l + m)² - 4lm is

  • (l - m)²
  • (l + m - 2)²
  • (l + m + 2)²
  • none of these

  • 9. 
    The factorisation of
    1 + p + q + r + pq + qr + pr + pqr is

  • (1 + p)(1 + q)(1 + r)
  • (1 - p)(1 - q)(1 - r)
  • (1 - p)(1 - q)(1 + r)
  • (1 + p)(1 - q)(1 - r)

  • 10. 
    The value of
    0.645 × 0.645 + 2 × 0.645 × 0.355 + 0.355 × 0.355 is

  • 1
  • 0
  • -1
  • 2
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