Please give me the correct answer and please explain how you got the answer

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x