Formally, the name of the polynomial is P, not P(x), but the use of the functional notation P(x) dates from a time when the distinction between a polynomial and the associated function was unclear.
Dǎɣ əmik atiwalaɣen, əsim ən polynome eqalan P, əd waden P(x), mašan amitkal ən asiɗin ən əšiɣil ən P(x) alwaq ən alɣisab ɣur təbiɗawt ən gar polynôme əd əšiɣil ihan winan eqel aridan.