The length of a rectangle is the sum of the width and 3. The area of the rectangle is 54 units. What is the width, in units, of the rectangle?

Question

i dont know the answer to this problem can yall lz help

Answer 1

Let a be the width and b the length

a+3=b

a*b=54

a(a+3)=54

a^2+3a-54=0

a=6