If a + b = 5 and a² + b² = 13 , then ab = ?

(a)

12

(b)

6

(c)

5

(d)

13

(5 + 20)(− 20 − 5) = ?

(a)

−425

(b)

375

(c)

−625

(d)

0

The factors of x² − 6x + 9 are

(a)

(x − 3)(x − 3)

(b)

(x − 3)(x + 3)

(c)

(x + 3)(x + 3)

(d)

(x − 6)(x + 9)

The common factors of the algebraic expressions ax² y , bxy₂ and cxyz is

(a)

x² y

(b)

xy²

(c)

xyz

(d)

xy

The solutions of the inequation 3 ≤ p ≤ 6 are (where p is a natural number)

(a)

4, 5 and 6

(b)

3, 4 and 5

(c)

4 and 5

(d)

3, 4, 5 and 6