Originally Posted by Corona688

Multiplication is almost never implicit in a computer language. I don't actually know any which do it implicitly, but they probably exist, maybe math-specific languages and the like.

Neither juxtaposition of two parenthesized expressions, nor placing a variable before a parenthesized expression, however, can be used to imply multiplication:

julia> (x-1)(x+1)
ERROR: MethodError: objects of type Int64 are not callable
...

julia> x(x+1)
ERROR: MethodError: objects of type Int64 are not callable
...
Both expressions are interpreted as function application: any expression that is not a numeric literal, when immediately followed by a parenthetical, is interpreted as a function applied to the values in parentheses (see Functions for more about functions). Thus, in both of these cases, an error occurs since the left-hand value is not a function.