How can i factor (with long divison) a polynomial that doesn't have a constant?

abel muroi

Junior Member
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Jan 13, 2015
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I was given the polynomial and was told to put it in factored form..

2x3 + 5x2 + 6x

I'm trying to factor this polynomial with the long division method, but i am having a bit of trouble doing that because the polynomial doesn't have a constant at the end (...6x + 12)

So my question is, how can I factor this properly? I'm so used to factoring the polynomials that have a constant at the end..
 
Factor out an x, first.

The resulting quadratic-factor's discriminant (i.e., B^2-4AC) is negative; this tells us that the polynomial does not factor further, within the Real number system.

Try the above with this one, instead.

2x^3 + 5x^2 + 2x
 
I was given the polynomial and was told to put it in factored form..

2x3 + 5x2 + 6x

I'm trying to factor this polynomial with the long division method, but i am having a bit of trouble doing that because the polynomial doesn't have a constant at the end (...6x + 12)

So my question is, how can I factor this properly? I'm so used to factoring the polynomials that have a constant at the end..

2x3 + 5x2 + 6x = x ( 2x2 + 5x + 6) .... now you have the constant you were looking for. Analyze the function inside the parenthesis () for further factorization.
 
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