Answer:
Step-by-step explanation:
Complete the square
+ 2x - 13 = 0
+ 2x = 13
+ 2x +
= 13 +1 (take 1/2 of the b term , the 2 )
+ 2x + 1 = 14
(x +1)^2 = 14
Answer:

Step-by-step explanation:
Given


Required
Find CN
From the attachment:

Where

This means that:


or

This gives:

Open bracket

Collect anf simplify like terms


So:



Answer:



Step-by-step explanation:

The decimal forms of some real numbers, like
, terminate, while the decimal forms of other real numbers, like
, do not terminate, but have a repeating pattern. Still other real numbers, like
, have decimal forms that neither terminate nor repeat.
Each friend should get 1/3 if there is only 2/3 left