For example, how much is this | - 1.82 |
|The symbol | represents absolute value. It means that the numbers in the symbol are all positive, | - 1.82 | = 1.82
A2-B2 = equal to what (mathematical formula)
a^2-b^2=(a+b)(a-b)
Write a few mathematical formulas, what is profit equal to? What is profit rate equal to? What is principal equal to?
Profit = selling price cost
Profit margin = profit divided by cost
Principal = amount of money taken out last profit