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1 vote
Y - 5 = 0.5x2 + 6x - 3 How many x-intercepts does this have?
 update!!! the answer is 2

2 Answers

2 votes
y = 0.5x^2 + 6x + 2 (adding 5 to both sides of the original equation)

Discriminant b^2 - 4ac = 6^2 - 4 * 0.5 * 2 = 36 - 4 = 32

The discriminant is positive and not a perfect square so the equation has 2 x intercepts.
User Kim Stacks
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7 votes
The answer is actually 2 because you have 0.5x (I think that's what it's supposed to be) and 6x.
User MartijnvdB
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