arkansaw: sqrt(y+1) + sqrt(y-3) = 5
i cant solve this confounded problem i need it an example
sqrt(y + 1) + sqrt(y - 3) = 5
sqrt(y + 1) + sqrt(y - 3) = 5
| -sqrt(y - 3) sqrt(y + 1) = 5 - sqrt(y - 3)
| ^2 y+1 = (5 - sqrt(y - 3) )^2
y+1 = 5^2- 2*5*sqrt(y - 3) + (y - 3)
y+1 = 25- 10*sqrt(y - 3) + (y - 3)
y+1 = 22- 10*sqrt(y - 3) + y
| -y 1 = 22- 10*sqrt(y - 3)
| -22 -21 = -10*sqrt(y - 3)
| *-1 21 = 10*sqrt(y - 3)
| /10 21/10 = sqrt(y - 3)
| ^2 (21/10)^2 = y - 3
| +3 (21/10)^2 +3 = y
441/100 + 3 = y
441/100 + 300/100 = y
y = 741/100
y = 7.41
+3146 
