Question

The area of a rectangle is x^2 - 2x - 15 and the length of the rectangle is x + 3. Find the width of the rectangle.
A. x – 5
B. x2 + 15
C. x + 5
D. (x – 2)(x + 3)

Answer 1

http://www.youtube.com/watch?v=Ldsc_bJG1Ic

Answer 2

the area=length* width
x^2-2x-15=(x+3)(width)
(x-5)(x+3)=(x+3)(width)
Width=(x-5)(x+3)/(x+3)
Width=x-5
the answer is A

Answer 3

@ktnguyen1 thanks