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proofs 4u (1 Viewer)

kractus

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Screen Shot 2023-02-12 at 8.44.10 pm.png
How would u do these 2 qurstions? Agagin idk where to start
 

Masaken

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someone posted this qn (18) a few days back i think:
 

jimmysmith560

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Would the following approach help with question 19?

If a - c is a divisor of ab + cd, there is an integer n such that







ad + bc





Therefore, a - c is a divisor of ad + bc.
 

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