7)
Andrea argues that (5m−3)
(2m+4)
models the closure property. What reasoning could Andrea use to argue that multiplication of polynomials is closed?
(1 point)
Responses
The exponents of the product are whole numbers and the product is a polynomial
The exponents of the product are whole numbers and the product is a polynomial
The coefficients of the product are whole numbers and the product is a polynomial
The coefficients of the product are whole numbers and the product is a polynomial
The coefficients of the product are integers and the product is a polynomial
The coefficients of the product are integers and the product is a polynomial
The terms in the expression are rational numbers and the product is a polynomial
The terms in the expression are rational numbers and the product is a polynomial
The exponents of the product are integers and the product is a polynomial
The exponents of the product are whole numbers and the product is a polynomial.
8)
Charlie subtracts two polynomials, 2x2−2x2
, and says that the difference proves that polynomials are not closed under subtraction. Kate argues that the difference does in fact show that polynomials are closed under subtraction. Who is correct?
(1 point)
Responses
Charlie
Charlie
Kate