Can someone check my answer ? geometry: cpctc

This is different from the first one can someone me

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

Provide all steps given to find the answer. simplify: 5(2x+9)²