ICSE Board Practice

ICSE Grade VIII - Simplification of Algebraic Fractions
Question 1
1.
    • Simplify
    • (
      x
      9
      )

      (
      x
      2
       
      81
      )
    • +
    • (
      4
      x
      +
      1
      )

      (
      4
      x
      2
       
      35
      x
      9
      )
    • (
      4
      x
      +
      3
      )

      (
      x
      2
       
      81
      )
  • (
    2
    x
    3
    )

    (
    x
    2
     
    81
    )
  • (
    2
    x
    3
    )

    (
    x
    2
     
    +
    81
    )
  • (
    x
    3
    )

    (
    x
    2
     
    81
    )
  • (
    x
    3
    )

    (
    x
    2
     
    +
    81
    )
  • (
    2
    x
    +
    3
    )

    (
    x
    2
     
    +
    81
    )
Question 2
2.
    • Simplify
    • (
      x
      2
       
      +
      2
      x
      15
      )

      (
      x
      2
       
      25
      )
    • +
    • (
      x
      2
       
      +
      12
      x
      +
      32
      )

      (
      x
      2
       
      +
      3
      x
      40
      )
  • (
    2
    x
    +
    1
    )

    (
    x
    5
    )
  • (
    2
    x
    +
    1
    )

    (
    x
    +
    5
    )
  • (
    2
    x
    1
    )

    (
    x
    +
    5
    )
  • (
    3
    x
    +
    1
    )

    (
    x
    +
    5
    )
  • (
    4
    x
    +
    1
    )

    (
    x
    5
    )
Question 3
3.
Which of the following gives the L.C.M. of two or more polynomials?
  • ( Product of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
  • ( Product of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
  • ( L.C.M. of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
  • ( L.C.M. of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
Question 4
4.
    • Simplify
    • (
      x
      2
       
      5
      x
      )

      (
      2
      x
      3
      y
      )
    • ÷
    • (
      x
      2
       
      25
      )

      (
      4
      x
      2
       
      9
      y
      2
       
      )
  • (
    3
    x
    2
     
    +
    3
    x
    y
    )

    (
    x
    +
    5
    )
  • (
    2
    x
    2
     
    +
    3
    x
    y
    )

    (
    x
    +
    5
    )
  • (
    2
    x
    2
     
    +
    3
    x
    y
    )

    (
    x
    5
    )
  • (
    2
    x
    2
     
    +
    3
    x
    y
    )

    (
    x
    5
    )
  • (
    2
    x
    2
     
    +
    5
    x
    y
    )

    (
    x
    +
    5
    )
Question 5
5.
    • Simplify
    • (
      x
      2
       
      +
      5
      x
      +
      4
      )

      (
      x
      2
       
      +
      2
      x
      +
      1
      )
  • (
    2
    x
    +
    4
    )

    (
    x
    1
    )
  • (
    x
    4
    )

    (
    x
    1
    )
  • (
    4
    x
    +
    4
    )

    (
    2
    x
    +
    1
    )
  • (
    x
    +
    4
    )

    (
    x
    1
    )
  • (
    x
    +
    4
    )

    (
    x
    +
    1
    )
Question 6
6.
    • Simplify
    • 2

      (
      4
      x
      1
      )
    • (
      3
      x
      +
      1
      )

      5
  • (
    12
    x
    2
     
    x
    11
    )

    (
    20
    x
    +
    5
    )
  • (
    12
    x
    2
     
    +
    2
    x
    +
    11
    )

    (
    20
    x
    5
    )
  • (
    12
    x
    2
     
    x
    +
    11
    )

    (
    20
    x
    5
    )
  • (
    11
    x
    2
     
    x
    +
    11
    )

    (
    20
    x
    5
    )
  • (
    12
    x
    2
     
    x
    +
    11
    )

    (
    20
    x
    +
    5
    )
Question 7
7.
    • Simplify
    • (
      x
      2
       
      36
      )

      (
      x
      2
       
      64
      )
    • ÷
    • (
      x
      6
      )

      (
      x
      8
      )
  • (
    2
    x
    +
    6
    )

    (
    x
    8
    )
  • (
    x
    +
    6
    )

    (
    x
    8
    )
  • (
    x
    6
    )

    (
    x
    8
    )
  • (
    x
    +
    6
    )

    (
    x
    +
    8
    )
  • (
    3
    x
    +
    6
    )

    (
    2
    x
    +
    8
    )
Question 8
8.
    • Find the L.C.M. of
    • 6
      x
    • and
    • 48
      x
      2
       
  • 48
    x
    3
     
  • 6
    x
  • 288
    x
    3
     
  • 48
    x
    4
     
  • 48
    x
    2
     
Question 9
9.
    • Find the H.C.F. of
    • (
      x
      2
       
      12
      x
      +
      35
      )
    • and
    • (
      x
      2
       
      11
      x
      +
      30
      )
  • (
    2
    x
    5
    )
  • (
    2
    x
    7
    )
  • (
    x
    5
    )
  • (
    x
    7
    )
  • (
    x
    6
    )
Question 10
10.
    • Simplify
    • (
      x
      +
      y
      )

      (
      x
      2
       
      x
      y
      )
    • (
      x
      y
      )

      (
      x
      2
       
      +
      x
      y
      )
  • 2

    x
    2
     
  • 3

    x
    2
     
  • 1

    x
    2
     
  • 3

    (
    x
    2
     
    )
  • 1

    (
    x
    2
     
    )