Polynomials - Jamb Mathematics Past Questions and Answers

Question 256:

• JAMB 2015

Factorize \( x^2 − 2x − 15 \)

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

Question 257:

• JAMB 2015

Simplify \( [1 ÷ (x^2 + 3x + 2)] + [1 ÷ (x^2 + 5x + 6)] \)

A. \( \frac{2}{(x + 1)^2} \)
B. \( \frac{2}{(x + 1)(x + 2} \)
C. \( \frac{2}{(x + 1)(x + 2} \)
D. \( \frac{2}{(x + 1)(x + 3} \)

Question 258:

• JAMB 2015

Solve x² − 2x − 3 = 0

A. X = 2 or 1
B. X = 3 or -1
C. X = 1 or 0
D. X = 1 or 2

Question 259:

• JAMB 2015

Calculate the value of x and y if (27^x ÷ 81^x+2y = 9 ,x + 4y = 0

A. X = 1, y = 1/2
B. X = 2, y = — 1/2
C. X − 0, y = 1
D. X = 2, y = —1

Question 260:

• JAMB 2015

If √ (2x + 2) − √x =1 ,find x.

A. X = 1 twice
B. X = 0 or 1
C. X = 3 or 1
D. X = 2 twice