Answer:
a² + b²
Step-by-step explanation:
(a + b)² - 2ab ← expand parenthesis using FOIL
= a² + 2ab + b² - 2ab ← collect like terms
= a² + b²
Answer:
A, B and D
Step-by-step explanation:
Because all of these are true
Answer:
8
Step-by-step explanation:
1/4πr² + (2x4) - 1/4πr²
r = 4
8
Answer:
40,143.4 square inches
Step-by-step explanation:
c= 226.08
r= 113.04
area = Pi *r^2
Answer: -3
Step-by-step explanation:
-4
+ 
can be written as
x 
which is the same as 2
Also ,
can be written as
x
, which is the same as 5
Substituting into the main question , we have
-4 (2
) + 5
= -8
+ 5
= -3