What is the sum of the polynomials?
(–x2 + 9) + (–3x2 – 11x + 4)

What number should be added to both sides of the equation to complete this square? x^2-10x=7

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Which of the following represents the factorization of the trinomial below? x^2+7x-30