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What do you think about it?

i think its the middle one

Why so you think so? Or you just guess?

well, i think you need that to factor, but its pretty much just a guess

why, what are you thinking?

the b^2-4ac > 0 means there are two distinct real roots

|dw:1365103062271:dw|

oh, soo than my guess was wrong? @klimenkov @alexwantstolearn

its is the middle on you are correct
that part will tell you how many x intercepts there are

i will provide an example

|dw:1365103320051:dw|

ohh, hah cool! so i am right!

okay, so what about the second part?

|dw:1365103456715:dw|

just about todo that

what?

when you said the second part
you want to know how that applies to that equation correct

sorry i find it really hard to read when its not an image

|dw:1365103731072:dw|

|dw:1365103799936:dw|

sooo, ahah what is this?

since its positive it means it has real roots

sorry what part don't understand and i will try and explain it more clearly

the answer too b is 25

do you understand why that part of the quadratic equation is essential

so the answers summarised are

|dw:1365104088534:dw|

are you happy with the answer i have shown the answer to a and b

yes, thank you soo much!!!