Let
![\mathbb{Z}](/media/m/7/e/7/7e7a66cf43dd596531b0d3b302075071.png)
denote the set of all integers. Prove that for any integers
![A](/media/m/5/a/e/5ae81275ee67d638485e903bdc0e9cde.png)
and
![B,](/media/m/1/6/e/16e519ccc501d3fbc4fe4ab09a16195c.png)
one can find an integer
![C](/media/m/5/a/b/5ab88f3f735b691e133767fe7ea0483c.png)
for which
![M_1 = \{x^2 + Ax + B : x \in \mathbb{Z}\}](/media/m/7/f/4/7f4151c6fbfcad04b0aae6109aaebbb0.png)
and
![M_2 = {2x^2 + 2x + C : x \in \mathbb{Z}}](/media/m/1/6/7/1674a442032d92bc5fff9d55bd37ddcb.png)
do not intersect.
%V0
Let $\mathbb{Z}$ denote the set of all integers. Prove that for any integers $A$ and $B,$ one can find an integer $C$ for which $M_1 = \{x^2 + Ax + B : x \in \mathbb{Z}\}$ and $M_2 = {2x^2 + 2x + C : x \in \mathbb{Z}}$ do not intersect.