Tìm cực trị của hàm số: z = x^2 + y^2 + xy + x – y

Find percent notation for 0.008 0.008=

Bugs bunny was 33 meters below ground, digging his way toward pismo beach, when he realized he wanted to be above ground. he turned and dug through the dirt diagonally for 80 meters until he was above ground

Can someone me and plz do the problem