One down three more to go help if you can please! :)
brb have to go eat lunch
I think the answer is C btw
I think you are right :)
can you maybe explain why you think im right please(You dont have to) xD
oh sorry well in general the fact that a+x=a+y leads to x=y by subtracting a from both sides is the subtraction property of equality (Rule: You can always subtract the same thing from the left and right) let \(a=(AG)^2,x=(GK)^2,y=(FI)^2\)and you can see we are applying this rule
Thank you very much!