We can first set the smaller one to be a, and the larger one to be a+2. Now, the problem tells us that a(a+2)=99. Multiplying out and rearranging, we obtain the equation a2+2a−99=0. We can factor this as (a−9)(a+11)=0, so the solutions are a=−11 or a=9. This means that the odd integers could either be −11,−9, or they could be 9,11.
Hope this helped 