Question 146936

Area of rectangle(A)=Length(L)*Width(W) or A=L*W
We are told that:
A=x^2+50x sq cm, and
W=x cm
So, our equation to solve is:

x^2+50x=L*x  divide each term by x
x+50=L or
L=x+50 cm------------------------------Length

CK
A=L*W=(x+50)*x=x^2+50x

Hope this helps---ptaylor