Locus: centre (1,0) radius 4 ? (1 Viewer)

[weirdguy99]

I got (1,0) radius 4 in the exam, but now I can't reproduce it.. lol

Someone do itttt!

 

[SXCBEAST]

I got (1,0) radius 4 in the exam, but now I can't reproduce it.. lol

Someone do itttt!

the squares cancel each other out, so you're left with (x+1)^2 ...... = 40. expand it, complete the square.