What will be the value of k so that the quadratic equation kx2 - 4x + 1 = 0 has two equal roots?

A.

2

B.

3

C.

4

D.

8

E.

\(\frac{1}{4}\)

View answer & explanation

Correct answer is C

kx2 - 4x + 1 = 0, comparing with ax2 + bx + c = 0

a = k, b = -4, c = 1 for equal root b2 = 4ac

(-4)2 = 4k

k = \(\frac{16}{4}\)

= 4

See all Mathematics questions & answers
See more JAMB questions & answers
Aptitude Tests

Verbal Reasoning Questions and Answers

Data Interpretation Questions and Answers

Quantitative Reasoning Questions and Answers

Spatial Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Microsoft Office Questions and Answers

Personality Test

Logical Reasoning Questions and Answers

Situational Judgement Questions and Answers

Abstract Reasoning Questions and Answers

Typing Speed and Accuracy Test

Nigeria General Knowledge Questions and Answers

Puzzles Questions and Answers

See all →


View latest jobs in Nigeria today