Question 48339
<pre><font size = 5><b>Divide

(x<sup>4</sup> + x<sup>2</sup> - 80)/(x + 3)


There are two terms missing in the numerator, so we rewrite it as

(x<sup>4</sup> + 0x<sup>3</sup> + x<sup>2</sup> + 0x - 80)/(x + 3)

Then we perform the long division:

     <u>       x<sup>3</sup> - 3x<sup>2</sup> + 10x - 30</u>
x + 3)x<sup>4</sup> + 0x<sup>3</sup> +  x<sup>2</sup> +  0x - 80
      <u>x<sup>4</sup> + 3x<sup>3</sup></u>
          -3x<sup>3</sup> +  x<sup>2</sup>
          <u>-3x<sup>3</sup> - 9x<sup>2</sup></u>
                10x<sup>2</sup> +  0x
                <u>10x<sup>2</sup> + 30x</u>
                      -30x - 80
                      <u>-30x - 90</u>
                             10

Now we write the remainder over the divisor and
add it to the quotient, giving

          x<sup>3</sup> - 3x<sup>2</sup> + 10x - 30 + 10/(x+3)

Edwin</pre>