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I have a few math questions I made them just like my actual problems so that I can go through the steps you have went through to answer my own problems...Again THESE ARE NOT THE REAL PROBLEMS JUST EXAMPLES LIKE MINE WITH DIFFERENT NUMBERS. I don't know how to complete these problems so I made up some to learn how to do my actual problems.

I am unsure how to make a radical sign with the keyboard so I am using a question mark in its place.

(2?5-?28)(?28+4?5)
(?3+2?5)^2
(3?7-6?2)(7?7+?2)
(4x?y+2)(4x?y-?2)
(6?2-5?5)(3?2+2?5)
Thank you for helping.

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1 answer
  1. For √, type in
    & r a d i c ;
    but without the intervening spaces.

    I will solve the first one:
    Use the FOIL rule
    (2√5-√28)(√28+4√5)
    =(2√5-2√7)(2√7+4√5)
    =4(√5-√7)(√7+2√5)
    =4(10-7-√5√7)
    =12-4√5√7

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