 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from Qelibar, a student: Please factorise x^2y^2 - 4 |
Hi Qelibar,
One of the factoring facts you need to know is how to factor a difference of squares. There is a good explanation of this technique on the Purple Math site. To see that your problem is a difference of squares write $x^2 y^2 = (xy)^2$ and $4 = 2^2$.
Penny
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.