ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 391:

• JAMB 1999

the shaded portion in the graph is represented by

A. Y + x - x \(\leq\) 0, y - x \(\leq\) 0
B. Y - x + x, 3 \(\leq\) 0, y - x \(\geq\) 0
C. Y + x - 3 \(\geq\) 0, y + x \(\leq\) 0
D. Y - x + x3 \(\geq\) 0, y + x \(\leq\) 0

Question 392:

• JAMB 2000

A binary operation * is defined by a * b = a\(^b\). If a * 2 = 2 - a, find the possible values of a.

A. 1, -1
B. 1, 2
C. 2, -2
D. 1, -2

Question 393:

• JAMB 2000

The 3rd term of an A.P is 4x - 2y and the 9th term is 10x - 8y. Find the common difference.

A. 19x - 17y
B. 8x - 4y
C. X - y
D. 2x

Question 394:

• JAMB 2000

Find the inverse of p under the binary operation * defined by p*q = p + q - pq, where p and q are real numbers and zero is the identity

A. P
B. P -1
C. P/(p-1)
D. P/(p+1)

Question 395:

• JAMB 2000

if (x - 1), (x + 1) and (x - 2) are factors of the polynomial ax³ + bx² + cx - 1, find a, b, c in that order.

A. -1/2, 1., 1/2
B. 1/2, 1, 1/2
C. 1/2, 1, -1/2
D. 1/2, -1, 1/2