```
let a: Double  = 9.1
let b: Double  = -1.1
let c: Double  = 1.3
root1: Double = (b + sqrt((b * b) - 4 * a * c)/(2 * a)
root2: Double = (b + sqrt((b * b) - 4 * a * c)/(2 * a)
print(root1)
print(root2)

```

Error is:

```
/tmp/560B3FBA-E1E9-48E8-B069-8958D75A2043.L2LFYF/main.swift:16:6: error: consecutive statements on a line must be separated by ';'
root1: Double = (b + sqrt((b * b) - 4 * a * c)/(2 * a)
     ^
     ;
/tmp/560B3FBA-E1E9-48E8-B069-8958D75A2043.L2LFYF/main.swift:16:6: error: expected expression
root1: Double = (b + sqrt((b * b) - 4 * a * c)/(2 * a)
     ^
/tmp/560B3FBA-E1E9-48E8-B069-8958D75A2043.L2LFYF/main.swift:16:1: error: use of unresolved identifier 'root1'
root1: Double = (b + sqrt((b * b) - 4 * a * c)/(2 * a)
^~~~~

```