The long side of a rectangle is 3x+21 units, and it's area is 3x^2+33x+84. Find the width

Question

The long side of a rectangle is 3x+21 units, and it's area is 3x^2+33x+84. Find the width

Answer 1

 Hi Shannon,

 

The area of the rectangular A=length*width

the area is given as 3x^2+33x+84 which could be factored into  (3x+21) (x+4)

the length is given as 3x+4

to find the width: we need to divide the area by the length

and we get (x+4) as the final answer for the width

hope this helps.