I don’t use this app anymore. Doing 2 more of these

Which expression is equivalent to 4 square root 6 divided by 3 root 2

Which of those sequences is a geometric sequence

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1