How to factorise an expression with no number in front of the \(x^2\) For \(\mathbf{x^2 + 5x + 6}\), the first step is to find two numbers whose sum is 5 and whose product is 6 ...

How to manually sum in Excel. 1. Click the cell you want the sum to appear in and click "=." 2. Type a number or click a cell that has a value. 3. Type "+." ...

As you can see, the net total is 381 – the result of the simple formula: =SUM(C2:C13). In a case like this, it might be beneficial to track the units sold separately from those returned.