Question 597187
<pre>
9x<sup>7</sup>y<sup>5</sup> + 54x<sup>5</sup>y<sup>4</sup> + 36xy

9xy(x<sup>6</sup>y<sup>4</sup> + 6x<sup>4</sup>y<sup>3</sup> + 4)

Multiply it back out and you'll get the original expression.

Edwin</pre>