The length of a rectangle is 5 centimeters less than its width. What are the dimensions of the rectangle if its area is 104 square​ centimeters?

Question

help me please thus is hard i cant' do it alone.

Answer 1

Hi Demoni,

 

I think the length should be 5 cm more than the width, right? Assuming that is the case, let's call the width w

then  length = w+5 cm

 

Area of a rectangle = width*length

104 = w*(w+5)

104 = w^2 + 5w

w^2 + 5w -104 = 0 (subtracted 104 from both sides)

(w - 8)(w + 13) = 0

Can you do the rest?