Question 746780
<pre>
50x<sup>5</sup>-75x<sup>4</sup>+40x<sup>3</sup>-60x<sup>2</sup>+8x-12

This has 6 terms, so we group the odd degree 
terms together and the even degree terms 
together:

(50x<sup>5</sup>+40x<sup>3</sup>+8x)+(-75x<sup>4</sup>-60x<sup>2</sup>-12)

We can factor 2x out of the first parentheses
and -3 out of the second parentheses:

2x(25x<sup>4</sup>+20x<sup>2</sup>+4)-3(25x<sup>4</sup>+20x<sup>2</sup>+4)

Now we can factor (25x<sup>4</sup>+20x<sup>2</sup>+4) out of each
and leave 2x and -3 to go in a parentheses:

(25x<sup>4</sup>+20x<sup>2</sup>+4)(2x-3)

We can also factor the trinomial in the first
parentheses and get:

(5x<sup>2</sup>+2)(5x<sup>2</sup>+2)(2x-3)

and since the first two factors are the same,
we can write:

(5x<sup>2</sup>+2)<sup>2</sup>(2x-3)

Edwin</pre>