B. - 6

C. 6

D. 8

E. 14

2. Solve .

A. 1

B. - 1

D. All real numbers

E. No real solutions

3. If a, b and c are positive integers and the quadratic equation has equal real roots, which of the following must be true?

E. ac is a perfect square

4. If has no real roots, which of the following must be false?

A. a and c are of the same sign

B. a and c are of different signs

C. b and c are of the same sign

D. b and c are of different signs

E. a and b are of the same sign

5. If one root of is twice of the other, find the values(s) of k.

B. 0

C. 1

D. 0 or 1

E. 0 or - 1

A.

B.

C.

D.

E. It cannot be determined.

7. Solve .

A. 2

B. ¡Ó 2

C. 3

D. ¡Ó 3

E. ¡Ó 3 or ¡Ó 2

8. Solve .

A. - 1 or 7

B. 1 or - 7

C. 0 or 8

D. 0 or - 8

E. 0