Factor each polynomial by removing the common monomial factor. x^{3}-x^{2}+x

Mary Hammonds

Mary Hammonds

Answered question

2021-12-11

Factor each polynomial by removing the common monomial factor.
x3x2+x

Answer & Explanation

kaluitagf

kaluitagf

Beginner2021-12-12Added 38 answers

Step 1
The monomial factor is a factor which consist only single term . We call an expression binomial if it consist 2 terms and trinomial if it consists three terms . Here we get a trinomial expression by removing common monomial factor .
Then we have to find the factors of the resulting trinomial. we know that the general form of a trinomial is ax2+bx+c=0
Step 2
We have a polynomial x3x2+x, here we have to remove the common monomial factor .
We can clearly identify that all the terms in the given polynomial x3x2+x is a multiple of x , therefor we can take x as a common monomial factor
Thus we have x3x2+x=x(x2x+1)
Now we have to find the factors of x2x+1 the trinomial.
By trinomial factorization method , to factorize x2x+1 we have to look for two integers a and b such that sum of a and b equal to the the coefficient of x (-1) and the product of a and b equal to the constant number (1) .
We know that only two integers gives the product value 1 is 1 and 1 itself. and the same time we cannot have -1 as a sum of two this kind of numbers.
Now we can use Discriminant to check the existence real roots or factors
If the discriminant b24ac>0, then we have real roots
If the discriminant b24ac<0, then we do not have real roots ( we may get imaginary roots )
We have trinomial x2x+1, where a=1, b=-1, c=1
b24ac=(1)24(1)
=1-4
b24ac=3
Thus we have discriminant b24ac<0, hence we do not have any real roots or factors for x2x+1.
Hence the factor of the polynomial x3x2+x is x(x2x+1).

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