Factorization of polynomials - Jamb Mathematics Past Questions and Answers

Question 16:

• JAMB 1980

List all integer values of x satisfying the inequality -1 < 2x - 5 \(\leq\) 5

B. 3, 4, 5
C. 2, 3, 4
D. 3, 4

Question 17:

• JAMB 1980

What factor is common to all the expressions x² - x, 2x² + x - 1 and x² - 1?

A. X
B. X + 1
C. X - 1
D. No common factor
E. (2x - 1)

Question 18:

• JAMB 1982

The factors of 6x - 5 - x2 are

A. -(x + 3)(x + 2)
B. (x + 5)(x + 1)
C. (x - 5)(1 - x)
D. (x + 1)(x + 5)

Question 19:

• JAMB 1983

Factorize completely 81a4 - 16b4

A. (3a + 2b)(2a - 3b)(9a² + 4b²)
B. (3a - 2b)(2a - 3b)(4a² - 9b²)
C. (3a - 2b)(3a + 2b)(9a² + 4b²)
D. (6a - 2b)(8a - 3b)(4a³ - 9b²)

Question 20:

• JAMB 1984

If (x - 2) and (x + 1) are factors of the expression x³ + px² + qx + 1, what is the sum of p and q

A. 9
B. -3
C. 3
D. \(\frac{17}{3}\)
E. \(\frac{2}{3}\)