Hi,

can someone please help me help convert this equation into a quadratic equation (i.e. of the form y=ax^2+bx+c)

5(x/7-9)^2=7y+3

How would I go about simplifying the left side, I don't really know how to deal with x/7-9. How do I subtract x/7 and 9. I forgot how to do this :(

Just quickly tell me how to go about doing this. Especially how to solve the left side, thats what I'm really stuck on and am having a difficult time finding info last minute to remind me how to do this.

I can't quite seem to think straight right now, and I need to do this asap

PLEASE AND THANK YOU

I'd greatly appreciate it