What is a quadratic polynomial?

eddy2017

eddy2017

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We were talking about quadratic equation in my post.
A quadratic equation takes this form: ax^2+bx+c=0
I don't think any of the equations in this post follow this pattern, right?. Or do they?. They are not equaled to 0. These are ploynomials. Just wondering in case these can be solved as a Q.E
 
eddy2017 said:
We were talking about quadratic equation in my post.
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Who is 'we', and what post are you talking about? Or, were you just thinking out loud about something that doesn't really matter in this thread.

?
 
mmm4444bot said:
Who is 'we', and what post are you talking about? Or, were you just thinking out loud about something that doesn't really matter in this thread.

?
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Oh, the tutors were discussing that I should learn about quadratic equations in a post I made. I saw this post and I want to know if any of the equations here qualify as quadratic. That is what I said we( referring to the tutors and me ). Take a look at my post here #10. I hope I am not breaking any rules.
 
mmm4444bot said:
Very well. Please do that in your own threads. Thank you!

[imath]\;[/imath]
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One question, mmm. Just to be sure I don't mess up.
Am I allowed to reply to other threads?. Or just the tutors?. Please I need to know this. I didn't read anything about not being able to in the guidelines, but just to be on the safe side. I'd like to know your opinion
 
eddy2017 said:
Am I allowed to reply to other threads?
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You're free to comment, but not for the purposes of starting your own discussions. If you're looking for tutoring on your own questions (like, what is or isn't a quadratic polynomial), then please start your own threads.

As far as trying to help other students, I wish you wouldn't. In the past, you've posted misinformation or off-topic information in other people's threads.

Thanks for understanding!

:)
 
eddy2017 said:
A quadratic equation takes this form: ax^2+bx+c=0
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That is one specific form, Eddy, but there are many other quadratic forms.

The exercise you've quoted is not about quadratic equations. It concerns quadratic polynomials and special factoring patterns.

Remember also: a quadratic polynomial may contain more than one variable.

:)
 
Another example:

x^2 = x^2

Not really a quadratic equation. Agree?

:)
 
Another perspective: all quadratic equations in one variable may be put in the form

ax^2 + bx + c = 0

But equations like

x^2 - x - 12 = (x - 4)(x + 3)

may not be put in that form. Hence, they are not quadratic equations. They are identities.

:)
 
eddy2017 said:
Just wondering in case these can be solved as a Q.E
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They aren't asking you to solve equations for any variable(s), Eddy. They're asking you to find a value for each unknown parameter (i.e., the numbers represented by asterisks).

:)
 
Otis said:
They aren't asking you to solve equations for any variable(s), Eddy. They're asking you to find a value for each unknown parameter (i.e., the numbers represented by asterisks).

:)
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That is fairly easy. At least I was able to do number 1.
 
Jomo said:
Agree. A quadratic equation has exactly two solutions.
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Prof Steven, seconding your reply that a QE has two solutions I have found this statement:
"A quadratic expression can be written as the product of two linear factors and each factor can be equated to zero, So there exist two solutions.
Can you provide an example where this can be seen?.
Why two solutions?
 
eddy2017 said:
Prof Steven, seconding your reply that a QE has two solutions I have found this statement:
"A quadratic expression can be written as the product of two linear factors and each factor can be equated to zero, So there exist two solutions.
Can you provide an example where this can be seen?.
Why two solutions?
Click to expand...
When is product ab = 0?
 
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