how can i open my ipad i forgot may apple id and password

Check your web browser autofill entries, the Keychain, and other records, or use Apple's iForgot service, or contact their Account Security team, or if you're the unit's original owner and have encountered the activation lock, click here and submit an unlock request.

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You just type that into your browser. If you forgot the password to open your iPad. The iPod will send a verification code to the device or number or email you used for account recovery. If you don’t have that in place you either remember your password or you factory reset the iPod and most probably lose the data.