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Mathematics 18 Online
OpenStudy (erinweeks):

HELP WOULD BE APPRECIATED .. The area of a rectangle is x2 - 2x - 15 and the length of the rectangle is x + 3. Find the width of the rectangle.

OpenStudy (erinweeks):

Answers .. A. x – 5 B. x2 + 15 C. x + 5 D. (x – 2)(x + 3)

jimthompson5910 (jim_thompson5910):

Divide the area by the length to get the width

OpenStudy (erinweeks):

i dont know how to do that on paper :o

jimthompson5910 (jim_thompson5910):

\[\Large \frac{x^2 - 2x - 15}{x+3}\] \[\Large \frac{(x – 5)(x + 3)}{x+3}\] Can you see what's next?

OpenStudy (anonymous):

lets factor \[x^{2}-2*x-15\]

OpenStudy (erinweeks):

so it would be a ? cause you factor out x + 3

jimthompson5910 (jim_thompson5910):

yes, that's correct

OpenStudy (erinweeks):

thank you (:

jimthompson5910 (jim_thompson5910):

sure thing

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