Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring? −b b2 − 4ac 2a Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation: 2x2 + 7x + 3 = 0

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Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring? −b b2 − 4ac 2a Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation: 2x2 + 7x + 3 = 0

Mathematics
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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?

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Other answers:

well, i think you need that to factor, but its pretty much just a guess
why, what are you thinking?
You can factor this only in case if you have real roots. They will be if the discriminant of your equation is bigger that zero.
the b^2-4ac > 0 means there are two distinct real roots
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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
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ohh, hah cool! so i am right!
okay, so what about the second part?
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just about todo that
what?
when you said the second part you want to know how that applies to that equation correct
noo, i mean this: Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation: 2x2 + 7x + 3 = 0
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
like, there are so many numbers i dont know which one is the answer. so look at the b part that i typed a few minutes ago and tell me what i should put in it
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
also i have explained why b^2-4ac is needed and gave an example of its use. I also calculated b for you and showed you what the value of a, b and c
yes, thank you soo much!!!

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