Challenge Question Describe step by step how you would find the domain of the following functions. Justify each step a) f(x) = x2 -16 b) g(x) = V3x -...

Need to know how to do problems like these. Please explain how you got it.

Challenge QuestionDescribe step by step how you would find the domain of the following functions. Justify eachstepa) f(x) = x2 -16b) g(x) = V3x - 12f(x) = x2 - 16Explain why your step is getting you closer to theanswer:How do you know that your answer is correct?g(x) = V3x - 12Explain why your step is getting you closer to theanswer:How do you know that your answer is correct?