the area of a rectangular field is x^2-x-72 m^2. the length of the field is x+8 m(meters). what is the width of the field in meters?

Question

anonymous · Answer

You know that area=(length)(width)
So you have:
$$x^2-x-72=(x+8)*w$$
Solve for w.

anonymous · Answer

wow i appreciate it, thank you for your quick answer

anonymous · Answer

so W would be?

anonymous · Answer

the length would be 8?

anonymous · Answer

Well the left side factors to:
$$(x-9)(x+8)=(x+8)w \implies w=(x-9)$$

anonymous · Answer

i find trouble resolving this clearly arg

anonymous · Answer

So w would be x-9 meters

anonymous · Answer

yes but the x would be?

anonymous · Answer

or there is no clear answer because it doesnt tell right ?

anonymous · Answer

You can't solve it from the information given. You know l in terms of x, you know w in terms of x, and you know area in terms of x, you can't solve x explicitly the way I see it.

anonymous · Answer

so there is no term since it is not given we finish at  W=x-9
thank you very much for your patience

anonymous · Answer

No problem