ICSE Board Practice

ICSE Grade VIII - Simplification of Algebraic Fractions
Question 1
1.
    • Simplify
    • (
      6
      x
      2
       
      25
      x
      9
      )

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

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

    (
    2
    )
  • (
    2
    x
    9
    )

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

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

    (
    3
    x
    2
    )
Question 2
2.
    • Simplify
    • (
      x
      2
       
      5
      x
      )

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

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

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

    (
    x
    +
    5
    )
  • (
    3
    x
    2
     
    +
    4
    x
    y
    )

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

    (
    x
    5
    )
  • (
    4
    x
    2
     
    +
    2
    x
    y
    )

    (
    x
    +
    5
    )
Question 3
3.
    • Simplify
    • (
      9
      x
      2
       
      36
      )

      (
      16
      x
      2
       
      4
      )
    • (
      4
      x
      2
      )

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

    (
    4
    x
    2
    )
  • (
    3
    x
    +
    6
    )

    (
    4
    x
    +
    2
    )
  • (
    3
    x
    6
    )

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

    (
    2
    x
    1
    )
  • (
    5
    x
    +
    6
    )

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

      5
    • (
      3
      x
      1
      )

      4
  • (
    6
    x
    +
    13
    )

    20
  • (
    x
    +
    3
    )

    4
  • (
    5
    x
    13
    )

    22
  • (
    5
    x
    +
    13
    )

    22
  • (
    5
    x
    +
    13
    )

    20
Question 5
5.
    • Find the H.C.F. of
    • 84
      x
      2
       
      y
      2
       
      z
    • and
    • 204
      x
      y
      3
       
      z
      2
       
  • 12
    x
    2
     
    y
    2
     
    z
  • 12
    x
    y
    2
     
    z
    3
     
  • 1428
    x
    2
     
    y
    3
     
    z
    2
     
  • 12
    x
    y
    2
     
    z
  • 12
    x
    y
    4
     
    z
Question 6
6.
Which of the following gives the H.C.F of two or more polynomials?
  • ( H.C.F. of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
  • ( Product of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
  • ( H.C.F. of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
  • ( Product of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
Question 7
7.
    • Simplify
    • (
      10
      x
      2
       
      +
      36
      x
      +
      18
      )

      (
      10
      x
      2
       
      24
      x
      18
      )
  • (
    3
    x
    +
    6
    )

    (
    2
    x
    +
    6
    )
  • (
    x
    3
    )

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

    (
    3
    )
  • (
    x
    +
    3
    )

    (
    x
    3
    )
  • (
    x
    +
    3
    )

    (
    x
    +
    3
    )
Question 8
8.
    • Simplify
    • (
      x
      +
      6
      )

      (
      x
      2
       
      36
      )
    • +
    • (
      4
      x
      1
      )

      (
      4
      x
      2
       
      +
      23
      x
      6
      )
    • (
      4
      x
      4
      )

      (
      x
      2
       
      36
      )
  • (
    2
    x
    4
    )

    (
    x
    2
     
    +
    36
    )
  • (
    2
    x
    +
    4
    )

    (
    x
    2
     
    36
    )
  • (
    x
    +
    4
    )

    (
    x
    2
     
    +
    36
    )
  • (
    x
    +
    4
    )

    (
    x
    2
     
    36
    )
  • (
    2
    x
    +
    4
    )

    (
    x
    2
     
    +
    36
    )
Question 9
9.
    • Simplify
    • (
      9
      x
      2
       
      24
      x
      +
      7
      )

      (
      9
      x
      2
       
      45
      x
      +
      56
      )
    • ÷
    • (
      5
      x
      2
       
      +
      x
      18
      )

      (
      12
      x
      2
       
      17
      x
      40
      )
  • (
    12
    x
    2
     
    +
    11
    x
    5
    )

    (
    5
    x
    2
     
    +
    x
    18
    )
  • (
    12
    x
    2
     
    +
    11
    x
    5
    )

    (
    5
    x
    2
     
    +
    x
    +
    18
    )
  • (
    12
    x
    2
     
    +
    11
    x
    +
    5
    )

    (
    5
    x
    2
     
    +
    x
    +
    18
    )
  • (
    13
    x
    2
     
    +
    11
    x
    5
    )

    (
    5
    x
    2
     
    +
    x
    +
    18
    )
  • (
    15
    x
    2
     
    +
    11
    x
    5
    )

    (
    2
    x
    2
     
    +
    x
    18
    )
Question 10
10.
    • Simplify
    • (
      x
      2
       
      +
      8
      x
      )

      (
      x
      2
       
      +
      17
      x
      +
      72
      )
  • 3
    x

    (
    x
    +
    9
    )
  • x

    (
    x
    +
    9
    )
  • 2
    x

    (
    x
    9
    )
  • x

    (
    x
    9
    )
  • (
    x
    )

    (
    x
    9
    )