#21
To find the area of rectangle, you multiple length by width, so that would be

Since we are talking about area \ length, x need to be positive so we don't need to worry about absolute value now.
#22
The area of triangle is

, so that would be

Hope this helps.
Answer:
x•(2xy-3z)
Step-by-step explanation:
2x²y -3xz== x(2xy-3z)
The answer is C!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The standard equation of a circle with center C(a, b) and radius r is given by:

thus for C(a, b)=C(7, 5) and radius r=4, the equation is given by:

Answer: