A certain right triangle has area 84 in^2. One leg of the triangle measures 1 in. less than the hypotenuse. Let x represent the length of the hypotenuse.
a) Express the length of the leg mentioned above in terms of x. Give the domain of x.
b) Express the length of the other leg in terms of x.
c) Write an equation based on the information determined thus far. Square both sides and then write the equation with one side as a polynomial with integer coefficients, in descending powers, and the other side equal to 0. Divide out any common factors to find the most simplified form.
d) Solve the equation in part (c) graphically. Find the lengths of the three sides of the triangle.