8 B class Factorisation

1.The factorisation of 12a2b+15ab2 gives:

• A. 3ab(4ab+5)
• B. 3ab(4a+5b)
• C. 3a(4a+5b)
• D. 3b(4a + 5b)

2.The factorisation of 12x+36 is

• A. 12(x+3)
• B. 12(3x)
• C. 12(3x+1)
• D. x(12+36x)

3.On factorising 14pq + 35pqr, we get:

• A. pq(14+35r)
• B. p(14q+35qr)
• C. q(14p+35pr)
• D. 7pq(2+5r)

4.The factors of 6xy – 4y + 6 – 9x are:

• A. (3x + 2) (2y + 3)
• B. (3x – 2) (2y – 3)
• C. (3x – 2) (2y + 3)
• D. (3x –+2) (2y – 3)

5.The factors of x2+xy+8x+8y are:

• A. (x+y) (x+8)
• B. (2x+y) (x+8)
• C. (x+2y) (x+8)
• D. (x+y) (2x+8)

6.The factors of 4y2 – 12y + 9 is:

• A. (2y+3)2
• B. (2y-3)2
• C. (2y-3)(2y+3)
• D. None of the above

7.The factors of 49p2 – 36 are:

• A. (7p+6)2
• B. (7p-6)2
• C. (7p – 6 ) ( 7p + 6)
• D. None of the above

8.The factors of m2 – 256 are:

• A. (m + 4)2
• B. (m – 4)2
• C. (m – 4) (m+4)
• D. None of the above

9.When we factorise x2+5x+6, then we get:

• A. (x +2) (x + 3)
• B. (x – 2) (x – 3)
• C. (x × 2) + (x × 3)
• D. (x × 2) – (x × 3)

10.The factors of 3m2 + 9m + 6 are:

• A. (m + 1) (m + 2)
• B. 3(m + 1) (m + 2)
• C. 6(m + 1) (m + 2)
• D. 9(m + 1) (m + 2)