The area of a rectangular deck can be modeled by f(x) = 2x3 + 30x2 – 6x – 90. if x + 15 represents the width, which expression represents the length?

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no