Yes, if you write something that way, it usually refers to a function. v(x) means that you have a function called "v", and that it somehow depends on a variable called "x".
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It could be but that depends on the definition of v(x), including its domain and range.
VX is not a Roman numeral. X = 10 V = 5 XV = 15 VX = Not a number The order of the letters is very important in Roman numerals, XV is 15 but there is no number that would be written VX in Roman numerals.
August VX
VX is not a Roman number.IV = 4 VIII = 8 XII = 12 Vii = 7 LV = 55
(x + 5)(v - y)
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