What is a factor pair of 48 that adds up to 2? answer quickly

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

Find the cosine function that is represented in the graph.

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)