The problem asks to "find all pairs of integers (x,y) that satisfy the equation xy−2x+7y=49.
So far, I've got
xy−2x+7y=49x(y−2)+7=49y≤49
I can't get any further. Any help?
How to find lim without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
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