Polynomials - Jamb Mathematics Past Questions and Answers

Question 251:

• JAMB 2014

Factorize 2y² - 15xy + 18x²

A. (2y - 3x) (y + 6x)
B. (2y - 3x) (y - 6x)
C. (2y + 3x) (y - 6x)
D. (3y + 2x) (y - 6x)

Question 252:

• JAMB 2014

Find the value of k if y - 1 is a factor of y³ + 4y² + ky - 6

A. -6
B. -4
C. O
D. 1

Question 253:

• 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 254:

• 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 255:

• 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