Answer:
We can also find the vertex by using the expressions:
(
−
b
2
a
,
f
(
−
b
2
a
)
)
Standard form:
a
x
2
+
b
x
+
c
=
0
In this example,
a
=
−
1
and
b
=
0
x
=
−
0
2
(
−
1
)
=
0
2
=
0
y
=
f
(
0
)
=
7
−
0
2
=
7
Same result of
(
0
,
7
)
They did a trading chain and traded items
"<span>b. Some serfs had their own small farms, where they grew food to feed their families" is no true, since they always worked for the lords. </span>
Answer:
communism
Explanation:
everything is shared amongst a group of individuals, making it impossible for one individual superior to another.
Prussia is the correct answer
