Question

roor 72+ under root 72 +.....infinity (-) root 42+ under root 42...infinity=? and explain

Answer 1

let y=√(72+√(72+√(72..........infinity
y=✓(72+y)
y^2-y-72=0
y=(1+√(1+288))/2

similarly X=√(42+√(42.......
x=√(42+x)
x=(1+√(1+168))/2

y-x=(√289 - √169)/2
= (17-13)/2=2

Answer 2

Step-by-step explanation:

mark meh as brainest......