HELP !! How can I Describe and correct the error in solving this equation below in the image .

So as u can see we have to find whether the value of x is correct or not.

So:-

First write the equation

Put value of x I.e 6 in the equation.

To make it easy to understand I have covered square above 6 in it's original form I.e 6 ×6

multiply 6 with 6 to get 36

open the brakets and multiple 2 with 36 and then subtract 72 with 54

Hence proved ~

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.