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Mathematics 20 Online
OpenStudy (anonymous):

6. 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) x + 7 and x + 3 x – 7 and x + 3 x – 7 and x – 3 x + 7 and x – 3

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