Neco Mathematics 2005 Past Questions and Answers

Question 16:

• NECO 2005

If (x - a) is a factor of bx - ax + x² - ab, what is the other factor?

A. (x + b)
B. (b - a)
C. (x - a)
D. (a + b)
E. (a - b)

Question 17:

• NECO 2005

Simplify (6 - x - x2) ÷ (x2 - 4)

A. (3 + x) ÷ (x + 2)
B. (x - 3) ÷ (x - 2)
C. (x - 3) ÷ (x + 3)
D. (3 - x) ÷ (x + 2)
E. (3 - x) ÷ (x - 2)

Question 18:

• NECO 2005

Find the absolute mean deviation of the sample 10, 12, 14, 11, 13.

A. 14.6
B. 14
C. 12
D. 6.2
E. 1.2

Question 19:

• NECO 2005

In Δ ABC, A = 60°, C = 90° and AC = 12m. Find the Length of the hypotenuse.

A. 24m
B. 14m
C. 12m
D. 7m
E. 6m

Question 20:

• NECO 2005

For what value(s) of x is the expression (x² + 15x + 50) ÷ (x - 5) not defined

A. -5, -10
B. -10
C. -5
D. 5
E. 10, 5