Answer:
16
Step-by-step explanation:
Each term in the second factor is multiplied by each term in the first factor, that is
y(y² + 4y + 16) - 4x(y² + 4y + 16) ← distribute both parenthesis
= y³ + 4y² + 16y - 4xy² - 16xy - 64x
Compare - axy to - 16xy ⇒ a = 16
Answer:

Step-by-step explanation:
The formula to find the area of a circle is

Let pi be (3.14), the radios as given in the question is (0.9). Therefore;

1st one as they go up in constant values
Answer:
48
Step-by-step explanation:
if you multiply 24 by 10 you get 240 then you divide that by 5 which gives you your answer of 48.