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Can you help please thanks

 Jan 22, 2023
 #1
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Hi OldTimer

 

(a+b)(c+d)=ac+bd+ad+cbThis will only be rational if, and only if, the last two terms cancel each other out iead=cbwhich simplifies toca=db

 Jan 22, 2023
 #2
avatar+239 
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Thanks for your support Melody & Team

 Jan 23, 2023
 #3
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You are always welcome OldTimer  :))

Melody  Jan 24, 2023

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