I need help with this question, please

What is the product? (x2+3y+7) [yy+1)

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

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