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zarkam21:
B?
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Vocaloid:
the parabola opens upwards so that negative sign can't be there
Vocaloid:
remove that negative sign, now what answer do you get?
zarkam21:
A
Vocaloid:
good, well done
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zarkam21:
But quick question, ?
zarkam21:
because it opens down, shouldn't it be a negative?
zarkam21:
Cool, thanks =)
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