C - (x-3)^2=36
If we expand (x-3)^2=36:
(x-3)(x-3)=36
x^2-3x-3x+9=36
x^2-6x+9=36
Then subtract 36
x^2-6x-27=0
Heres an example x2- 16 when u solve or factor u should get the difference of two squares of (x+2) (x-2)
First you convert the percentage into a decimal. 18% to 0.18, then you multiply that decimal to the price of the item being discounted and bam, you have your price.
Hmmmm
This looks like homework, you sure you've read the terms of service?
