If 2x^2+5x-12 = (2x-3)(x+4), which equation should be solved to find the roots of 2x^2+5x-12=0

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