a squared + b squared = c squareda = 2b = ?c = 72 squared + b squared = 7 squared4 + b squared = 494 + b squared  by 4 = 49  4b squared = 45square root of b squared = square root of 45b = square root of 45b = 6.70820393I'm not sure about the fractions. But here's a start.Then be sure to enter your answer back into the problem to make sure it is correct. You should end up with a statement that says 0 = 0 if you have the correct answer.
