Find the 76th term of the arithmetic sequence 17 19 21

Place the following steps in order to complete the square and solve the quadratic equation,

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

With both problems. a.s.a.p directions on photo ^