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Set up dual monitors on Windows - Microsoft Support
Set up dual monitors on Windows. To get your PC to recognize multiple monitors: Make sure your cables are connected properly to the new monitors, then press Windows logo key + P to select a display option. If you need more help, here's what to do:
Upgrade to Windows 10: FAQ - Microsoft Support
An upgrade moves your PC from a previous version of Windows—such as Windows 7 or Windows 8.1—to Windows 10. An upgrade can take place on your existing device, though Microsoft recommends using Windows 10 on a new PC to take advantage of the latest features and security improvements.
Upgrade to Windows 11: FAQ - Microsoft Support
Find answers to top questions about upgrading to Windows 11, from the minimum hardware requirements to where to find the upgrade.
Add or subtract dates - Microsoft Support
In the following example, you'll see how to add and subtract dates by entering positive or negative numbers. Enter your due dates in column A. Enter the number of days to add or subtract in column B. You can enter a negative number to subtract days from your start date, and a positive number to add to your date.
Applies To: Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
SUM function - Microsoft Support
How to use the SUM function in Excel to add individual values, cell references, ranges, or a mix of all three.
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
Xbox 订阅取消和退款 | Xbox Support
你可以随时取消 Xbox 订阅。. 关闭定期计费将停止订阅的未来扣费,并使你在订阅到期之前使用其权益。. 你也可能有资格立即取消并获得退款;但不是所有订阅费用都能退款。. 了解如何在下面的“取消订阅”部分中取消 Xbox 订阅并检查退款资格。. 在以下国家 ...