f ( x ) = x ^ { 2 } + 6 x + 9
Soluções para a tarefa
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0
f
(
x
)
=
x
2
+
6
x
+
9
x
2
−
9
0
=
x
2
+
6
x
+
9
x
2
−
9
(
x
2
−
9
)
⋅
0
=
(
x
2
+
6
x
+
9
)
0
=
x
2
+
6
x
+
9
factor:
(
x
+
3
)
(
x
+
3
)
=
0
(
x
+
3
)
2
=
0
(
x
)
=
x
2
+
6
x
+
9
x
2
−
9
0
=
x
2
+
6
x
+
9
x
2
−
9
(
x
2
−
9
)
⋅
0
=
(
x
2
+
6
x
+
9
)
0
=
x
2
+
6
x
+
9
factor:
(
x
+
3
)
(
x
+
3
)
=
0
(
x
+
3
)
2
=
0
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