Python

2. Write the definition code for a function named equation, that takes three numbers, n1, n2 and n3 and returns the value of (n1*n22)-3n2 +n3.

3.Write a boolean function that checks whether a number is >=0 (true if number >=0, and false otherwise).

4.Write a code for function main, that gets three numbers from the user and uses the boolean function (from the previous question) so it uses the function equation, to display the outcome, if all three numbers are >=0, otherwise it displays a messages that the input was illegal.