## anonymous 4 years ago factor 9x^2-12x+36 like this ( )( )

1. anonymous

May be something like this $$9x{}^2-12x+36= \left(x-\frac{2}{3} \left(1-2 i \sqrt{2}\right) \right) \left( x- \frac{2}{3} \left(1+2 i \sqrt{2}\right)\right)$$

2. anonymous

is that i cap?

3. anonymous

i cap ?!

4. anonymous

idk what is i?

5. anonymous

wasnt the answer I was looking for but thanks..

6. anonymous

$$\large i=\sqrt{-1}$$

7. anonymous

complex number?

8. anonymous

no its just that a square root can never be a negative number so its just an imaginary number.. I think,,

9. anonymous

its a complex number...and this is possible