>
8
th
grade
1/5
To be sure, please, check your solution again.
Quadratic equations
Instructions:
Solve quadratic equation and find out values of unknown variables x
1
and x
2
.
-4.x
2
- 12.x + 280
=
0
/
=
0
(x
).(x
)
=
0
x
1
=
x
2
=