Here are the instructions to make a right triangle from earlier: • Choose two integers.
• Make one side length equal to the sum of the squares of the two integers,
• Make one side length equal to the difference of the squares of the two integers.
• Make one side length equal to twice the product of the two integers.

1.Using a and b for the two integers, write expressions for the three side lengths.

2. Why do these instructions make a right triangle?