Thực hiện phép nhân, rút gọn rồi tính giá trị của biểu thức : a) x(x - y) + y(x + y)
tại x = -6 và y = 8;
b) x(x - y) = x^(x + y) + yx2 – x) tại x =
1
và y = -100,
2

For what value of (y) is 3^3/3^y =1/9

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?

Find the dimensions of the circle. area = 64π in.² r= in.