Jamb Mathematics Past Questions For Year 1991
Question 21
Solve the equation (x - 2) (x - 3) = 12
- A. 2, 3
- B. 3, 6
- C. -1, 6
- D. 1, -6
Question 22
Simplify \(\frac{\sqrt{1 + x} + \sqrt{x}}{\sqrt{1 + x} - \sqrt{x}}\)
- A. -2x - 2\(\sqrt{x (1 + x)}\)
- B. 1 + 2x + 2\(\sqrt{x (1 + x)}\)
- C. \(\sqrt{x (1 + x)}\)
- D. 1 + 2x - 2\(\sqrt{x (1 + x)}\)
Question 23
Evaluate \((x^2)(x^2- 1){-\frac{1}{2}}- (x^2-1)^{\frac{1}{2}}\)
- A. \((x^2 - 1){-\frac{1}{2}}\)
- B. (\(x^2\) - 1)1
- C. (x\(x^2\) - 1)
- D. \((x^2 - 1)^{-1}\)
Question 24
Find the gradient of the line passing through the points (-2, 0) and (0, -4)
- A. 2
- B. -4
- C. -2
- D. 4
Question 25
At what value of x is the function y = \(x^2- 2x - 3\) minimum?
- A. 1
- B. -1
- C. -4
- D. 4
