Question 991021
Hi dear,
let L=lenght,
w=width
Then,from your question,
L=w+6-----(1)
and
L*w=11----(2)
Put 1 in 2,
(w+6)w=11
w²+6w-11=0
Solve the resulting quadratic equation as follows:
*[invoke quadratic "w",1,6,-11]
Then w=1.5cm,w=-7.3cm
When w=1.9,
L=1.9+6
L=7.9cm
when w=-7.3,
L=-7.3+6
L=-1.3cm