The length of a rectangle is one more than two times the width. The area of a rectangle is 136. find the dimensions

Let width be x

ie length = 2x+1

area = (2x+1) (x)

2x^2+x=136

2x^2+x-136=0

(x-8) (2x+17) = 0

x-8=0 or 2x+17=0

x=8 or x = - 17/2 (reject as length>0)

x = 8

width is 8

length is 17

u can check this by multiplying 17 and 8 and it gives u 136 ie this is correct

I'm not sure how to work this out but I can tell you the formula.

Formula - 2w + 1.