>
8
th
grade
1/5
I am sorry, but you did some mistake. Try to find it and repair it!
Quadratic equations
Instructions:
Solve quadratic equation and find out values of unknown variables x
1
and x
2
.
-7.x
2
+ 63.x - 98
=
0
/
=
0
(x
).(x
)
=
0
x
1
=
x
2
=