see
http://www.jiskha.com/display.cgi?id=1289262952
I really need help factoring these special Trinomials.
This question really puzzled me. I thought I had it correct, but when I checked the answer at the back of the book, I was wrong, and so I would like to know what was it that I had done wrong.
This was the question:
x^2-4x+4
This is how I solved it:
x^2-4x+4
x^2-2x-2x+4
x(x-2)-2(x+2)
(x-2)(x+2)
- I could not get any further than this. I thought that this would be correct, but the actual answer is
(x-2)^2
How did they get that?
If there is an easier way to solve this, then can you please show me how. Cause solving things like I have above is difficult.
1 answer
1 answer