## anonymous 5 years ago Factor completely (0.25y^2-0.0009)

1. amistre64

its a diff of squares

2. amistre64

(.5y -.03)(.5y +.03)

3. anonymous

wow I got something totally different much longer number....lol...

4. amistre64

.... you just have to be able to recognize what a difference of squares looks like. (a^2 -z^2) factors to (a+z)(a-z)

5. anonymous

$0.25 y^2-0.0009=\frac{(50 y-3) (50 y+3)}{10000}$