How do you factor x211+18=0?

1 Answer
Feb 16, 2017

The answer is (x9)(x2)=0

Explanation:

x211x+18=0

Find factors of 18 which ADD (because of the + with 18) to make 11.
The signs will be the SAME because of the + with 18), they will BOTH be MINUS. (because of the - with -11).

9×2=18and9+2=11

(x9)(x2)=0