Elective Mathematics

Question 1

1If b² − 4ac > 0 the roots are real and distinct.

Easy

A. True B. False

Question 2

2If the discriminant is zero, the equation has

Easy

A. two equal real roots B. no real roots C. two distinct real roots D. one imaginary root

Question 3

3The discriminant of ax² + bx + c = 0 is

Easy

A. b − 4ac B. 4ac − b² C. b² − 4ac D. b² + 4ac

Question 4

4If the discriminant is negative, the roots are

Easy

A. zero B. equal C. real and distinct D. not real

Question 5

5The product of the roots of x² − 13x + 42 = 0 is ___

Easy

Your answer (fill in the blank)

Question 6

6Find the product of the roots of x² + 3x + 2 = 0.

Easy

A. −2 B. −3 C. 3 D. 2

Question 7

7Find the product of the roots of x² + 4x = 0.

Easy

A. 0 B. −1 C. −4 D. 1

Question 8

8Solve x² + 8x + 12 = 0.

Easy

A. x = −6 or x = −2 B. x = −8 only C. x = 12 or x = 8 D. x = 2 or x = 6

Question 9

9Find the sum of the roots of x² − 8x + 12 = 0.

Easy

A. −8 B. 8 C. −7 D. 12

Question 10

10Find the product of the roots of x² − 7x + 6 = 0.

Easy

A. −6 B. 6 C. 5 D. 7