What is 1999+4+9999-1234557 times 2

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

Which of the following vectors are orthogonal to (2,1)? check all that apply

What are two numbers that have a sum of 15