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Sveta_85 [38]
3 years ago
10

Divided: x³-2x²-x+2 by x+1. Using long division method.​

Mathematics
2 answers:
Step2247 [10]3 years ago
8 0
<h2><u>ANSWER</u><u>:</u></h2>

<h3><u>2</u></h3>

<h2><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u></h2>

<u>CARR</u><u>Y</u><u> ON</u><u> LEARNING</u>

<u>CAN</u><u> </u><u>YOU</u><u> BRAINLEST</u><u> ME</u><u> PLEASE</u>

Aliun [14]3 years ago
7 0

\large\underline{\sf{Solution-}}

Given that

\purple{\rm :\longmapsto\:Dividend =  {x}^{3} -  {2x}^{2} - x + 2}

and

\purple{\rm :\longmapsto\:Divisor = x + 1}

So, By using Long Division Method, we have

\begin{gathered}\begin{gathered}\begin{gathered} \:\: \begin{array}{c|c} {\underline{\sf{}}}&{\underline{\sf{\:\: {x}^{2} - 3x + 2\:\:}}}\\ {\underline{\sf{x  + 1}}}& {\sf{\: {x}^{3}  -  {2x}^{2} - x + 2 \:\:}} \\{\sf{}}& \underline{\sf{- {x}^{3} -  {x}^{2} \:  \: \:  \:  \:  \:  \:  \:  \:  \: \:\:}} \\ {{\sf{}}}& {\sf{\: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  - 3{x}^{2} - x +2  \:  \:  \:  \:   \:  \:  \:  \:\:}} \\{\sf{}}& \underline{\sf{\:\: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  3{x}^{2} + 3x  \:  \:  \:  \:  \:  \: \:\:}} \\ {\underline{\sf{}}}& {\sf{\:\: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 2x  + 2 \:\:}} \\{\sf{}}& \underline{\sf{\: \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \: - 2x - 2\:\:}} \\ {\underline{\sf{}}}& {\sf{\:\: \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 0\:\:}}  \end{array}\end{gathered}\end{gathered}\end{gathered}

<u>So, </u>

\bf\implies \:Remainder = 0

<u>Verification </u>

\purple{\rm :\longmapsto\:Dividend =  {x}^{3} -  {2x}^{2} - x + 2}

\purple{\rm :\longmapsto\:Divisor = x + 1}

\purple{\rm :\longmapsto\:Remainder = 0}

\purple{\rm :\longmapsto\:Quotient =  {x}^{2}  - 3x + 2}

<u>Now, Consider </u>

\rm :\longmapsto\:Divisor \times Quotient + Remainder

\rm \:  =  \: (x + 1)( {x}^{2} - 3x + 2) + 0

\rm \:  =  \:  {x}^{3} -  {3x}^{2} + 2x +  {x}^{2} - 3x + 2

\rm \:  =  \:  {x}^{3} -  {2x}^{2} - x + 2

\rm \:  =  \: Dividend

<u>Hence, Verified</u>

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