Please post the second problem in a separate thread.View attachment 23993View attachment 23992
I am not really know the solutions, can anyone give me some hints to solve these problems?
Many thanks!
thanks to remind, i solved the first question. I will separate the second question in another postPlease post the second problem in a separate thread.
What can we say about b2 if b is even? Odd?
You did. It was moved here, as stated in posts #2 and #3.Somehow (probably because the baby needed my attention) I failed to post that there is an error in problem 6.
The product of two even numbers is a multiply of 4. So 2b^2 is a multiply of 4 => b^2 is a multiply of 2=>b is a multiply of 2 => b is even