Answer:
-x² + 2x - 3
Step-by-step explanation:
Simply combine like terms together.
x² terms are added together
x terms are added together
Constants are added together
Answer:
A coefficient number is a number multiplied by a variable.
Step-by-step explanation:
Answer:
113.04ft^2
Step-by-step explanation:
Like before 
C=pid
d=diameter
d=4
C=4pi
tada
if you want
aprox pi=3.14
C=12.56 units