rectangle has a length of
18 feet. The width is x feet
less than the length. If the
area must be less than 216
square feet, what could be
the measurement of the
width?
Answer: y = I x l + 1/2
Step-by-step explanation:
Answer:
D) x = -12 or x = 2
Step-by-step explanation:
The given quadratic equation is:

When y=0, we obtain:

We split the middle term with -2, 12 because their product is is -24 and their sum is 10.

We factor by grouping to obtain:


Either
or 
Either
or 