The rectangle below has an area of x^2-16 square meters and a width of x+4 meters. What expression represents the length of the rectangle?

Question

foxesrcool · Answer

options plz.

grizwoldjack · Answer

this is the whole problem

anthonyym · Answer

Area of rectangle is length*width.
Area = length*width

Therefore,
Area/length = width

anthonyym · Answer

So it's
width = Area/length
width = (x^2 - 16)/(x+4)

I substituted the given information into the formula

grizwoldjack · Answer

so it would be x^3-16 x+4

anthonyym · Answer

Do you understand what I did so far? width = (x^2 - 16)/(x+4)

grizwoldjack · Answer

oh i see, I multiplied instead of dividing. x-4

likeabossssssss · Answer

$\Huge\color{#EB00FF}{\text{WELCOME}}$$\Huge\color{blue}{\text{TO}}$ $\Huge\color{green}{\text{OPEN}}$$\Huge\color{purple }{\text{ STUDY!!!!!!!!!!!}}$ $\Huge\heartsuit$
@grizwoldjack

anthonyym · Answer

Yes the width would be x-4. You take apart x^2 - 16 into (x+4)(x-4). Good job

grizwoldjack · Answer

thank you so much

anthonyym · Answer

You're welcome