Answer:
a.
Explanation:
for an arithmetic operation on functions you simply apply this operation to the functional expressions :
(2x² + x - 3)(x - 1) = 2x³ - 2x² + x² - x - 3x + 3 =
= 2x³ - x² - 4x + 3
the domain is the range of set of all valid input (x) variable values.
there is no reason to forbid any real number.
so, it is all real numbers.