ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 56:

• JAMB 2015

Factorize x² + 9x + 20

A. (x − 5) ²
B. (x + 5)(x + 4)
C. (x — 5)(x + 3)
D. (x + 3) ²

Question 57:

• JAMB 2015

Find the x and y intercepts of the graph of 3x - z \(\leq\) 9

A. (3, -9)
B. (-3, 9)
C. (-3, -9)
D. (-3, 0)

Question 58:

• JAMB 2015

Solve the equation \( 3x^2 − 4x − 5 = 0 \)

A. X = 1.75 or − 0.15
B. X = 2.12 or − 0.79
C. X = 1.5 or − 0.34
D. X = 2.35 or −1.23

Question 59:

• JAMB 2015

The first and last term of a linear sequence (AP) are 6 and 10 respectively. If the sum of the sequence is 40. Find the number of terms

A. Nth = 3
B. Nth = 4
C. Nth = 5
D. Nth = 6

Question 60:

• JAMB 2015

Make x the subject of the equation
s = 2 + \(\frac{t}{5} \)(x + 3/5y)

A. X = 5[(s − 2) ÷ t] + 3yt
B. X = 25[(s − 2) ÷ t] − 3ty
C. X = [1 ÷ (s − 2)3ty]
D. X = [5(s − 2) 2 ÷ 3ty] x t