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Mathematics 8 Online
OpenStudy (anonymous):

Could you help me?

OpenStudy (inkyvoyd):

check b^2-4ac

Directrix (directrix):

How many do you think? Guess. Note that this is a quadratic .

OpenStudy (anonymous):

Is it 2?

OpenStudy (inkyvoyd):

if it is greater than zero, there are 2 solution. If it is less than 0, there are no solutions, and they are complex conjugates. If it is 0, there is one repeated solution.

OpenStudy (anonymous):

Could you put that in english? lol

OpenStudy (inkyvoyd):

b^2-4ac. Greater than zero -> 2 Equal to zero -> 1 Less than zero -> none.

OpenStudy (apoorvk):

o. check disctiminant D = b^2-4ac (after comparing with std equation) if its zero, then on eunique solution. less than zero, no real solution. greater than zero, then 2 real solutions

OpenStudy (anonymous):

How do I find the answer?

OpenStudy (inkyvoyd):

b^2-4ac. Greater than zero -> 2 Equal to zero -> 1 Less than zero -> none. In this case, a=-3, b=1, c=-4

OpenStudy (anonymous):

So, are there 2 solutions?

OpenStudy (inkyvoyd):

There are NONE.

OpenStudy (anonymous):

Are you sure your correct? If so, 2 medals

OpenStudy (anonymous):

you could also just solve it right?

OpenStudy (anonymous):

I'm bad at math. :P

OpenStudy (inkyvoyd):

Dude, FIND b^2-4ac, and tell me what you get.

OpenStudy (anonymous):

0?

OpenStudy (inkyvoyd):

Dude. a=-3, b=1, c=-4 Find b squared minus four a times c.

OpenStudy (anonymous):

1^2 - 4(-3)(-4)

OpenStudy (inkyvoyd):

thus there are no solutions because the answer is less than 0.

OpenStudy (anonymous):

okay 1 medal, because you were being rude. :P

OpenStudy (inkyvoyd):

lolol whtv. look up quadratic discriminant if you need more hep.

OpenStudy (anonymous):

You could've been a little nicer

OpenStudy (inkyvoyd):

I could've been more helpful. I'm not trying to be helpful though. I'm trying to solve as many problems as quickly as I can.

OpenStudy (anonymous):

Im learning this stuff. :P

OpenStudy (anonymous):

But 0 is correct, right?

OpenStudy (anonymous):

Comon' guys.

OpenStudy (inkyvoyd):

Yes, dude 0 is the ansewr. I think.

OpenStudy (anonymous):

I think? and I GAVE you a medal :(

OpenStudy (anonymous):

later people :P

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