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Use long division to divide. Specify the quotient and the remainder.(x3 − 734) ÷ (x − 9)quotient remainder

Sagot :

Let's begin dividing the leading term of the dividend by the leading term of the divisor

[tex]\frac{x^3}{x}=x^2[/tex]

Multiply it by the divisor

[tex]x^2\left(x−9\right)=x^3−9x^2[/tex]

Subtract the dividend from the obtained result

[tex]\left(x^3−734\right)−\left(x^3−9x^2\right)=9x^2−734[/tex]

Divide the leading term of the obtained remainder by the leading term of the divisor

[tex]\frac{9x^2}{x}=9x[/tex]

Multiply it by the divisor

[tex]9x\left(x−9\right)=9x^2−81x[/tex]

Subtract the remainder from the obtained result

[tex]\left(9x^2−734\right)−\left(9x^2−81x\right)=81x−734.[/tex]

Divide the leading term of the obtained remainder by the leading term of the divisor

[tex]\frac{81x}{x}=81[/tex]

Multiply it by the divisor

[tex]81\left(x−9\right)=81x−729[/tex]

Subtract the remainder from the obtained result

[tex]\left(81x−734\right)−\left(81x−729\right)=−5[/tex]

since the degree of the remainder is less than the degree of the divisor, then we are done

[tex]x^2+9x+81+−\frac{5}{x−9}[/tex]

The quotient is

[tex]\begin{equation*} x^2+9x+81 \end{equation*}[/tex]

The remainder is

[tex]-5[/tex]