已知A=1234567×1234569,B=1234568²,则A-B的值是______.
问题描述:
已知A=1234567×1234569,B=1234568²,则A-B的值是______.
答
A-B
=1234567×1234569-1234568²
=(1234568-1)(1234568+1)-1234568²
=1234568²-1-1234568²
=-1