ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 571:

• JAMB 2015

Find the range of values of t which satisfies the inequality.
2t − 1 \(\leq\) 3 and 2− t \(\geq\) 5

A. -3 \(\leq\) t \(\leq\) 1
B. -2 \(\leq\) t \(\leq\) 3
C. -3 \(\leq\) t \(\leq\) 4
D. -3 \(\leq\) t \(\leq\) 2

Question 572:

• JAMB 2015

The extension of a stretched string is directly proportional to its tension. If the extension produced by a tension of 8 Newton’s is 2cm, find the extension produced by a tension of 12 newton’s.

A. 2
B. 1
D. 3

Question 573:

• 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 574:

• 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 575:

• 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