Gce Model Questions Vol1 2017 Mathematics Question 45

Practice objective / multiple choice question 45 from the 2017 Gce Model Questions Vol1 Mathematics examination.

Gce Model Questions Vol1 2017 Mathematics Objective / Multiple Choice Medium Difficulty
Question 45 GCE_MODEL_QUESTIONS_VOL1 • 2017 • MATHEMATICS • objective

The quadratic equation (x^{2}-(k+1)x+k=0) has two real roots, one of which is double the other. Determine all possible values of (k) and state the corresponding pair of roots for each value.

Answer Options

A. k = 1, roots 1 and 1; k = 0.75, roots 0.75 and 1.5
B. k = 3, roots 1 and 3; k = 0.25, roots 0.25 and 0.5
Correct Answer C. k = 2, roots 1 and 2; k = 0.5, roots 0.5 and 1
D. k = -2, roots -2 and -1; k = 4, roots 2 and 4
Correct Answer
C
Correct Option:
k = 2, roots 1 and 2; k = 0.5, roots 0.5 and 1

About This Question

This is Gce Model Questions Vol1 2017 Mathematics Question 45. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Mathematics examination.

Difficulty level: Medium .

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