Question 943075

I cannot understand how (7-1)^2 equals 36 but 7•7-1-1 equals 47 what am I doing wrong? 
<pre><font face = "Tohoma" size = 4 color = "indigo"><b>No-one can know what you're doing wrong since you failed to share your work.
{{{(7 - 1)^2}}} = {{{6^2}}}, or 6(6), or 36
7(7) – 1 – 1 = 49 – 1 – 1, or 47      
You can do the check!! 
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