Mathematics 1985 Jamb Past Questions and Answers

Question 16 :

• JAMB 1985

The factors of 9 - (x² - 3x - 1)² are

A. -(x - 4)(x + 1) (x - 1)(x - 2)
B. (x - 4)(x - 2) (x - 1)(x + 1)
C. -(x - 2)(x + 1) (x - 2) (x - 1)
D. (x - 2)(x + 2) (x - 1)(x + 1)

Question 17 :

• JAMB 1985

If 3^2y + 6(3^y) = 27. Find y

A. 3
B. -1
C. 2
D. -3
E. 1

Question 18 :

• JAMB 1985

Factorize abx² + 8y - 4bx - 2axy

A. (ax - 4)(bx - 2y)
B. (ax + b)(x - 8y)
C. (ax - 2y)(bx - 4)
D. (bx - 4)(ax - 2y)
E. (abx - 4)(x - 2y)

Question 19 :

• JAMB 1985

At what real value of x do the curves whose equations are y = x³ + x and y = x² + 1 intersect?

A. -2
B. 2
C. -1
D. 9
E. 1

Question 20 :

• JAMB 1985

If the quadratic function 3x² - 7x + R is a perfect square, find R

A. \(\frac{49}{24}\)
B. \(\frac{49}{12}\)
C. \(\frac{49}{13}\)
D. \(\frac{49}{3}\)
E. \(\frac{49}{36}\)