ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 236:

• JAMB 1989

Make R the subject of the fomula S = \(\sqrt{\frac{2R + T}{2RT}}\)

A. R = \(\frac{T}{(TS^2 + 1)}\)
B. R = \(\frac{T}{2(TS^2 - 2)}\)
C. R = \(\frac{T}{2(TS^2 + 1)}\)
D. R = \(\frac{R}{2(TS^2 + 1)}\)

Question 237:

• JAMB 1989

The cost of dinner for a group of students is partly constant and partly varies directly as the number of students. If the cost is N74.00 when the number of is 20 and N96.00 when the number is 30, find the cost when there are 15 students

A. N68.50
B. N63.00
C. N60.00
D. N52.00

Question 238:

• JAMB 1989

If \(f(x) = 2x^2 - 5x + 3\), find f(x + 1).

A. 2x² - x
B. 2x² - x + 10
C. 4x² + 3x + 2
D. 4x² + 3x + 12

Question 239:

• JAMB 1989

Simplify \(\frac{324 - 4x^2}{2x + 18}\)

A. 2(x - 9)
B. 2(9 + x)
C. 81 - x²
D. -2(x - 9)

Question 240:

• JAMB 1989

Factorize completely \(y^3 -4xy + xy^3 - 4y\)

A. (y + xy)(y + 2)(y - 2)
B. (y - xy)(y - 2)
C. Y(1 + x)(y + 2)(y -2)
D. Y(1 - x)(y + 2)(y - 2)