Final answer:
The expressions that are factors of the given polynomial 2r^4 + r^3 - 2912r + 24 are (r + 6) and (2r - 1).
Step-by-step explanation:
The expressions that are factors of the given polynomial 2r^4 + r^3 - 2912r + 24 are:
To determine if an expression is a factor of a polynomial, you can substitute the value of r that satisfies the expression and check if the polynomial evaluates to zero. In this case, when r = -6, the polynomial evaluates to zero for the first expression, and when r = 1/2, the polynomial evaluates to zero for the second expression.
Therefore, (r + 6) and (2r - 1) are factors of the polynomial.