thuc hien phep tinh
a)(-3/7)^21 : (9/49)^6
b)3-(-67)^0+(1/2)^2 :2
(3/7)^21:(9/49)/6
( 3/7 )^21 : ( 9/49 )^6
Tính: (3/7)^21:(9/49)^6
Tính (3/7)^21 : (9/49)^6
Tính:
a.(3/7)^21 : (9/49)^6
b. 3+(6/7)^0+(1/2)^2: 2
Tính (3/7)21:(9/49)6
(3/7)21.(9/49)6
tính
(3/7)21:(9/49)6