How do you solve this by factoring?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?