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Hi dear! Can you help me to solve exercise #18 please!!!

Hi dear! Can you help me to solve exercise #18 please!!!-example-1

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Hello there. To solve this question, we'll have to remember some properties about dividing polynomials.

Given the polynomials, we want to evaluate the division:


(1+3x+x^4)/(3-2x+x^2)

Rewriting it the way we perform long division:

We start with the higher degree terms, namely x^4 and x².

Dividing x^4 by x², we get x². Now we multiply every term from the division by this factor and subtract from the term being divided.

Now, we have a 2x³ as the higher degree term from the term being divided. Dividing it by x², we get 2x. Multiply each term of the divisor and subtract from it.

Finally, the highest degree term from the term being divided is x². Dividing it by x², we get 1. Multiply each term of the divisor and subtract it from the dividend.

Now, the highest degree term from the dividend is -x, when the highest degree term from the divisor is x². We cannot proceed with the long division anymore.

It means that we have a quotient:


x^2+2x+1

And a remainder:


-x-2

Notice if we rewrite it as:


x^4+3x^2+1=(x^2-2x+3)\cdot(x^2+2x+1)-x-2

We have the division P(x)/D(x) written in the form:


P(x)=D(x)\cdot Q(x)+R(x)

Where Q(x) and R(x) are the quotient and remainder polynomials.

Hi dear! Can you help me to solve exercise #18 please!!!-example-1
Hi dear! Can you help me to solve exercise #18 please!!!-example-2
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