Can someone please hwlp me answer these, thank you so much if u did. And please don’t say “the pic isn’t clear” cuz ik ur only trying to get points, thank you bye

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

It says factor each expression 49x-28?

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.