Please help with these worksheets

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

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction