Question

6. The area of a rectangular painting is given by the trinomial x2 + 2x - 15. What are the possible (1 point)

dimensions of the painting? Use factoring,

Answer 1

(x+5)(x-3) = x^2+2x-15

Explanation:

since there is a -15 at the end and a +2x in the center, you want two factors of 15 which differ by 2. Those are 5 and 3. Now, you want one + and one -, so +5-3 = +2