To find the perfect square needed, you take the "middle" value and half it, then square it. so in this case, take -6, half it into 3, and square it to get 9. you'll be adding 9 to both sides
Can you please take a better picture please
I’m not sure about the answer but I know it wouldn’t be D because it’s positive. I think it maybe B though. Hope this helps!
It equals 276 but about 300