Please help me with this question. Perform the indicated operations where b > 0. Sqrt (72b) - sqrt (128b) + sqrt (98b)

I think it’s 81 sqrt (2b), but I’m not sure if it’s correct.

Solve the word problem. the table shows the low outside temperatures for monday, tuesday, and wednesday. by how many degrees did the low temperature increase from monday to tuesday? this function table shows the outside temperature for a given a. 21.1⁰ b. 8.6⁰ c. 4.9⁰ d. 3.9⁰(the picture is the graph the the question is talking about.)

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.