The area of a rectangular painting is given by the trinomial x2 + 4x – 21. What are the possible dimensions of the painting? Use factoring. (1 point) Responses (x + 7) and (x + 3) (x + 7) and ( x + 3) (x – 7) and (x + 3) (x – 7) and ( x + 3) (x – 7) and (x – 3) (x – 7) and (x – 3) (x + 7) and (x – 3) (x + 7) and (x – 3)
