W.2021
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I really need explanation on how did he get, P(x^2 2qx q^2) r

I don’t understand how is it 2qx





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Last edited by W.2021; 1 month ago
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mqb2766
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Attachment isnt showing, can you try again?
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the bear
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(Original post by W.2021)
I really need explanation on how did he get, P(x^2 2qx q^2) r

I don’t understand how is it 2qx





Attachment 1031181[attach]
maybe it is expanding (x + q )2 ? :holmes:
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