grafica PARÁBOLA

E

C

A

F

B

y=-x2+2X+8

-3
-2

-1

4

3

x
y

E

?
C
?

A

?
B
?
F
?

E

C

A

F

B

y=-x2-1

-2
-1
0
2
1
x
y

E

?
C
?

A

?
B
?
F
?

E

C

y=2x2-X-5

B

A

F

-2
-1
0
2
1
x
y

A

?
C
?
B
?
F
?

E

?
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