The unit numbers are b and c respectively, and b+c= 10.

Then the hundredth of ab×ac is a×(a+ 1).

Everyone is B × C.

Say 35 times 35.

3×(3+ 1)= 12

5×5=25

So the answer is 1225.

82*88

8*(8+ 1)=72

2*8= 16

So the answer is 72 16.