Answer:
either A or C
Step-by-step explanation:
Given:
The dimensions of a rectangle are
and
.
To find:
The expression that represents the area of the rectangle in simplest terms.
Solution:
Area of a rectangle is:

The dimensions of a rectangle are
and
. So, the area of the given rectangle is:




Therefore, the correct option is F, i.e.,
.
21 its 21 because it is 21
Answer:
Discriminant review
Discriminant reviewThe discriminant is the part of the quadratic formula underneath the square root symbol: b²-4ac. The discriminant tells us whether there are two solutions, one solution, or no solutions.