ICSE Board Practice

ICSE Grade VII - Factorisation
Question 1
1.
Which of the following gives the H.C.F of two or more polynomials?
  • ( Product of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
  • ( Product of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
  • ( H.C.F. of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
  • ( H.C.F. of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
Question 2
2.
    • Factorize
    • (
      25
      x
      2
       
      15
      x
      y
      18
      y
      2
       
      )
      • (
        5
        x
        3
        y
        )
      • (
        5
        x
        +
        6
        y
        )
      • (
        5
        x
        +
        3
        y
        )
      • (
        5
        x
        +
        6
        y
        )
      • (
        5
        x
        3
        y
        )
      • (
        5
        x
        6
        y
        )
      • (
        5
        x
        +
        3
        y
        )
      • (
        5
        x
        6
        y
        )
      • (
        5
        x
        +
        3
        y
        )
      • (
        5
        x
        3
        y
        )
Question 3
3.
    • Factorize
    •  
    • (
      a
      x
        +  
      b
      y
      )
      2
    • (
      a
      x
         
      b
      y
      )
      2
  • 4
    a
    x
    b
    y
  • 2
    (
    a
    x
    )
    2
    (
    b
    y
    )
    2
  • 4
    (
    a
    x
    )
    2
    (
    b
    y
    )
    2
  • 2
    a
    x
    b
    y
Question 4
4.
Which of the following are true?
a)
Every polynomial is a binomial
b)
    • π
    • r
      2
    • is a monomial
c)
A binomial has two and only two terms
d)
Degree of zero polynomial is zero
e)
A binomial may have degree 3
  • {a,b}
  • {a,b,c}
  • {b,c,e}
  • {a,d,e}
  • {d,c}
Question 5
5.
    • Factorize
    • (
      64
      x
      2
       
      16
      y
      2
       
      )
      • (
        8
        x
        +
        4
        y
        )
      • (
        8
        x
        +
        4
        y
        )
      • (
        8
        x
        +
        2
        y
        )
      • (
        8
        x
        8
        y
        )
      • (
        8
        x
        2
        y
        )
      • (
        8
        x
        +
        8
        y
        )
      • (
        8
        x
        4
        y
        )
      • (
        8
        x
        4
        y
        )
      • (
        8
        x
        +
        4
        y
        )
      • (
        8
        x
        4
        y
        )
Question 6
6.
    • Factorize
    •  
    • (
      56
      x
      y
      +
      16
      y
      2
       
      )
      • 8
        y
      • (
        7
        x
        2
        y
        )
      • 8
        y
      • (
        7
        x
        2
        y
        )
      • 8
        x
      • (
        7
        x
        2
        y
        )
      • 8
        y
      • (
        7
        x
        +
        2
        y
        )
      • 8
        x
      • (
        7
        x
        +
        2
        y
        )
Question 7
7.
    • Factorize
    •  
    • (
      15
      x
      2
       
      +
      2
      x
      y
      24
      y
      2
       
      )
      • (
        3
        x
        +
        4
        y
        )
      • (
        5
        x
        +
        6
        y
        )
      • (
        3
        x
        4
        y
        )
      • (
        5
        x
        6
        y
        )
      • (
        3
        x
        +
        4
        y
        )
      • (
        5
        x
        6
        y
        )
      • (
        3
        x
        +
        4
        y
        )
      • (
        3
        x
        +
        4
        y
        )
      • (
        3
        x
        4
        y
        )
      • (
        5
        x
        +
        6
        y
        )
Question 8
8.
    • Factorize
    • (
      a
      2
       
      b
      2
       
      )
  • (
    a
    +
    b
    )
    (
    a
    b
    )
  • b
    (
    b
    )
  • (
    2
    a
    +
    b
    )
    (
    2
    a
    b
    )
  • (
    a
    +
    4
    b
    )
    (
    a
    +
    b
    )
  • (
    a
    b
    )
    (
    a
    3
    b
    )
Question 9
9.
    • Factorize
    • (
      x
      2
       
      +
      2
      x
      a
      +
      3
      x
      +
      a
      2
       
      +
      3
      a
      40
      )
      • (
        x
        a
        5
        )
      • (
        x
        +
        a
        8
        )
      • (
        x
        a
        +
        8
        )
      • (
        x
        +
        a
        +
        5
        )
      • (
        x
        +
        a
        +
        8
        )
      • (
        x
        a
        5
        )
      • (
        x
        +
        a
        +
        8
        )
      • (
        x
        +
        a
        5
        )
      • (
        x
        +
        a
        5
        )
      • (
        x
        a
        +
        8
        )
Question 10
10.
    • Factorize
    • (
      4
      x
      3
       
      18
      x
      2
       
      +
      6
      x
      +
      28
      )
  • (
    x
    2
    )
    (
    5
    x
    +
    2
    )
    (
    4
    x
    7
    )
  • (
    x
    2
    )
    (
    x
    +
    2
    )
    (
    x
    7
    )
  • (
    x
    2
    )
    (
    x
    +
    2
    )
    (
    7
    )
  • (
    x
    2
    )
    (
    3
    x
    +
    2
    )
    (
    3
    x
    7
    )
  • (
    x
    2
    )
    (
    2
    x
    +
    2
    )
    (
    2
    x
    7
    )