Question

How do you factor `x^2- 11+ 18=0`?

Answer 1

The answer is `(x-9)(x-2)=0`

Explanation:

`x^2-11x+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 xx 2 = 18 and 9+2= 11`

`(x-9)(x-2)=0`