6. the area of a rectangular field is given by the trinomial t2 – 4t – 45. the length of the rectangle is t + 5. what is the expression for the width of the field?

The area of a rectangle is simply the product of its length times its width. To get the width, the area is divided by its length. Dividing the trinomial t2-4t-45 by (t+5) results to (t - 9) which is the expression for the width of the field.