Mathematics 1991 JAMB Past Questions

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Rationalize \(\frac{2\sqrt{3} + 3 \sqrt{2}}{3\sqrt{2} - 2 \sqrt{3}}\)

A. 5 - 2\(\sqrt{6}\)
B. 5 + 2\(\sqrt{6}\)
C. 5\(\sqrt{6}\)
D. 5

View Answer & Discuss JAMB 1991

Multiply (x² - 3x + 1) by (x - a)

A. x³ - (3 + a) x² + (1 + 3a)x - a
B. x³ - (3 - a)x² + 3ax - a
C. x³ - (3 - a)x² - (1 = 3a) - a
D. x³ + (3 - a)x² + (1 + 3a) - a

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Evaluate \(\frac{xy^2 - x^2y}{x^2 - xy}\) When x = -2 and y = 3

A. 3
B. -\(\frac{3}{5}\)
C. \(\frac{3}{5}\)
D. -3

View Answer & Discuss (4) JAMB 1991

A car travels from calabar to Enugu, a distance of P km with an average speed of U km per hour and continues to benin, a distance of Q km, with an average speed of Wkm per hour. Find its average speed from Calabar to Benin

A. \(\frac{(p + q)}{pw + qu}\)
B. \(\frac{uw(p + q)}{pw + qu}\)
C. \(\frac{uw(p + q)}{pw}\)
D. \(\frac{uw}{pw + qu}\)

View Answer & Discuss (1) JAMB 1991

If w varies inversely as \(\frac{uv}{u + v}\) and is equal to 8 when

u = 2 and v = 6, find a relationship between u, v, w.

A. uvw = 16(u + v)
B. 16ur = 3w(u + v)
C. uvw = 12(u + v)
D. 12uvw = u + v

View Answer & Discuss JAMB 1991

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