Topic : Equation-Quadratic Equation
1.
from: category_eng

1.Understanding
use the sum of roots

Ans: A

1.

2.

3.

4.

5.
two solutions!
6.
A*B=0 then A=0 or B=0
7.
Making equation and solve it
1. c
2. a
3. d
4. e
5. C
two solutions!
6. B
A*B=0 then A=0 or B=0
7. D
Making equation and solve it