Question 44505
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-9x<sup>4</sup>(5x<sup>6</sup> + 11<sup></sup>x<sup>5</sup>)

Multiply the -9 by the 5 getting -45

So far you have: -45

Multiply the x<sup>4</sup> by the x<sup>6</sup> by adding 
the exponents and getting x<sup>10</sup>

Now so far you have -45x<sup>10</sup>

Multiply the -9 by the +11 getting -99

Now so far you have -45x<sup>10</sup> - 99

Multiply the x<sup>4</sup> by the x<sup>5</sup> by 
adding the exponents and getting x<sup>9</sup>

Now so far you have -45x<sup>10</sup> - 99x<sup>9</sup>

and that's the final answer.

Edwin</pre>