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Mathematics
Problem
A quadratic polynomial has zeros
−
1
-1
−
1
and
4
4
4
and passes through the point
(
0
,
−
8
)
(0,-8)
(
0
,
−
8
)
. Which of the following is its equation? a)
y
=
2
x
2
+
6
x
−
8
y=2x^{2}+6x-8
y
=
2
x
2
+
6
x
−
8
b)
y
=
2
x
2
−
6
x
−
8
y=2x^{2}-6x-8
y
=
2
x
2
−
6
x
−
8
c)
y
=
x
2
−
3
x
−
4
y=x^{2}-3x-4
y
=
x
2
−
3
x
−
4
d)
y
=
−
2
x
2
+
6
x
+
8
y=-2x^{2}+6x+8
y
=
−
2
x
2
+
6
x
+
8
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