Answer:
5±sqrt(15)
Step-by-step explanation:
(x-5)^2=15
Take the square root of each side
sqrt((x-5)^2)=±sqrt(15)
x-5 = ±sqrt(15)
Add 5 to each side
x-5 +5= 5±sqrt(15)
x = 5±sqrt(15)
x-5=square root of 15
x-5+5=sqrt of 15+5
x=sqrt of 15+5
thus, x=sqrt of 15+5 and x=sqrt of -15+5
