What is the i^2 ? i will mark as

Step-by-step explanation:

By definition, is known as "Imaginary unit" (It is also called "Unit imaginary number") and this is:

 In this case you need to find , so you need to remember the following property:

Therefore, in order to find , you must square both sides of the equation :

FInally. you must apply the property shown before. Through this procedure you get that the value of is the shown below:

the solution is 12x-6y

42.4

step-by-step explanation:

convert to decimal