Plz help plz

In which form is the following function written? y = - 2(x – 3)(x + 5)

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

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?