Mathematics 1986 Jamb Past Questions and Answers

Question 26 :

• JAMB 1986

Simplify \(\frac{1}{x - 2}\) + \(\frac{1}{x + 2}\) + \(\frac{2x}{x^2 - 4}\)

A. \(\frac{2x}{(x - 2)(x + 2)(x^2 - 4)}\)
B. \(\frac{2x}{x^2 - 4}\)
C. \(\frac{x}{x^2 - 4}\)
D. \(\frac{4x}{x^2 - 4}\)

Question 27 :

• JAMB 1986

make U the subject of the formula S = \(\sqrt{\frac{6}{u} - \frac{w}{2}}\)

A. U = \(\frac{12}{2s^2}\)
B. U = \(\frac{12}{2s+ w}\)
C. U = \(\frac{12}{2s^2 + w}\)
D. U = \(\frac{12}{2s^2}\) + w

Question 28 :

• JAMB 1986

Find the values of x which satisfy the equation 16^x - 5 x 4^x + 4 = 0

A. 1 and 4
B. -2 and 2
C. 0 and 1
D. -1 and 0

Question 29 :

• JAMB 1986

If \(\frac{a}{c}\) = \(\frac{c}{d}\) = k, find the value of \(\frac{3a^2 - ac + c^2}{3b^2 - bd + d^2}\)

A. 3k²
B. 2k - k²
C. \(\frac{3b^2k^2 - bk^2d + dk^2}{3b^2 - bd + d^2}\)
D. K²

Question 30 :

• JAMB 1986

At what points does the straight line y = 2x + 1 intersect the curve y = 2x² + 5x - 1?

A. (-2, -3) and(\(\frac{1}{2}\), 0)
B. (1, 0), (1, 3)
C. (4, 0) and (0,1)
D. 2, 0) and (0,1)