The area of a rectangle is x2 - 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)

Please explain. T:

Question

The area of a rectangle is x2 - 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)	

Please explain. T:

anonymous · Answer

Since area = length x width, you have
$$x ^{2}-2x-15 = (x+3) *width$$

anonymous · Answer

when you factor the left hand side and simplify, you'll get width as x - 5

anonymous · Answer

Ohhhhh, thank you sir.