Answer:
900° and 1260°
Step-by-step explanation:
The sum of the interior angles of a polygon is calculated as
sum = 180° (n - 2) ← n is the number of sides
(2)
Here n = 7 , then
sum = 180° × 5 = 900°
(3)
Here n = 9 , then
sum = 180° × 7 = 1260°
Answer:
b^2+2*a*b+a^2
Step-by-step explanation:
The expression is given to be:

Recall the multiplication rule of exponent given to be:

Therefore, we can simplify the numerator to be:

Hence, the expression becomes:

Recall the division rule of exponent given to be:

Therefore, the expression becomes:

Evaluating the answer, we have:

Therefore, the answer is:
Answer:mj,bhvb n
mnbnmb mbnmbnb
Step-by-step explanation: