We have $\displaystyle x,y\in\mathbb Z$ and

$\displaystyle 2xy-5x+y=55$

The solutions are $\displaystyle (x_1,y_1),(x_2,y_2),\ldots,(x_n,y_n)$. And the number of such pairs is $\displaystyle n$.

Then find $\displaystyle \sum_{i=1}^n(x_i+y_i)+n$

×

Problem Loading...

Note Loading...

Set Loading...