Simultaneous equations - Jamb Mathematics Past Questions and Answers

Question 21:

• JAMB 1987

Find the values of y which satisfy the simultaneous equations x + y = 5, x² - 2y² = 1

A. -12, -2
B. -12, 12
C. 12, -2
D. 2, -2

Question 22:

• JAMB 1988

Given that 3x - 5y - 3 = 0, 2y - 6x + 5 = 0 the value of (x, y) is

A. (\(\frac{-1}{8}, \frac{19}{24}\))
B. 8, \(\frac{24}{19}\)
C. -8, \(\frac{24}{19}\)
D. (\(\frac{19}{24}, \frac{-1}{8}\))

Question 23:

• JAMB 1989

Solve the pair of equation for x and y respectively \(2x^{-1} - 3y^{-1} = 4; 4x^{-1} + y^{-1} = 1\)

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

Question 24:

• JAMB 1990

If a² + b² = 16 and 2ab = 7.Find all the possible values of (a - b)

A. 3, -3
B. 2, -2
C. 1, -1
D. 3, -1

Question 25:

• JAMB 1990

Find the solution of the equation x - 8\(\sqrt{x}\) + 15 = 0

A. 3, 5
B. -3, -5
C. 9, 25
D. -9, 25