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Mathematics 7 Online
OpenStudy (anonymous):

This has me stumped... Consider the graph of a quadratic function, y = ax^2 +bx + c. If b^2 - 4ac < 0 then

OpenStudy (mertsj):

b^2-4ac is called the discriminant. It is the radicand. If it is negative, the equation has two complex roots and does not cross the x axis. St. Johns, MI Redwings or Detroit Redwings?

OpenStudy (anonymous):

then youare trying to take the \[\sqrt{-number}\]

OpenStudy (anonymous):

well the quadratic equation is \[-b \pm (\sqrt{b ^{2}-4ac})/2a\]

OpenStudy (anonymous):

Detroit Redwings, and I'm trying to figure out if the graph ever crosses the x-axis.

OpenStudy (mertsj):

no it does not. That's what the negative radicand tells you.

OpenStudy (anonymous):

and yeah ^

OpenStudy (anonymous):

Oh, ok so if the radicand is positive then, it crosses the x-axis how many times?

OpenStudy (mertsj):

2 If the discriminant is positive, it crosses in two places. If it is 0, it crosses (is tangent to) in one place.

OpenStudy (anonymous):

Oh, thanks

OpenStudy (anonymous):

What made you ask about the Redwings?

OpenStudy (mertsj):

yw. (G0 REDWINGS!!)

OpenStudy (mertsj):

I graduated from St. Johns High School. They are the Redwings. And I have been a Detroit Redwing fan since the age of 11.

OpenStudy (mertsj):

I rooted for them when they had Gordie Howe, Ted Lindsay, Red Kelly, Bob Goldham, Sid Abel, and Terry Sawchuck in goal.

OpenStudy (anonymous):

Nice, 2nd in the central

OpenStudy (mertsj):

yep

OpenStudy (mertsj):

And i remember that game in the Montreal Forum where there was a near riot and the game was forfeited to Detroit.

OpenStudy (anonymous):

NIck Lidstrom best defense player for the Redwings, in my opinion

OpenStudy (mertsj):

And I always waited for the octopus on the ice.

OpenStudy (mertsj):

I would say so. But he is getting old.

OpenStudy (anonymous):

he is but hey goals are goals

OpenStudy (mertsj):

There you go. I don't get to see them very often because of where I now live.

OpenStudy (anonymous):

where do live, well state wise?

OpenStudy (anonymous):

Wait, you must be a big time fan since you know of Gordie Howe, Ted Lindsay, Red Kelly, Bob Goldham, Sid Abel, and Terry Sawchuck, those guys played 50-40 years ago.

OpenStudy (mertsj):

Yep. You are correct. And they were great.

OpenStudy (mertsj):

I live in Indiana

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