What expression is equivalent to 9-8x

The solution set for 5v2 – 125 = 0 is

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

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