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Mathematics 13 Online
OpenStudy (anonymous):

y=3x^2-5x+1 The function below crosses the x-axis?

OpenStudy (anonymous):

Use discriminant to find out

myininaya (myininaya):

find the discriminant b^2-4ac

myininaya (myininaya):

a=3, b=-5, c=1 what do you get when you plug these in

OpenStudy (anonymous):

and yes, it does

OpenStudy (anonymous):

5^2-4(3)(1)

OpenStudy (anonymous):

25-12

myininaya (myininaya):

now that number is positive right?

OpenStudy (anonymous):

13?

OpenStudy (anonymous):

yes

myininaya (myininaya):

so that implies what hermiles said

myininaya (myininaya):

which is yes it does

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