Tính nhanh
Tính nhanh ( ko sử dụng mtct)
a) (0,76)^3 + (0,24)^3 + 3.0,76^2.0,24
b) (1,35)^3 + (0,65)^3 + 3.1,35^2.0,65 + 3.1,35.0,65^2
c) (1,34)^3 - (0,34)^3 - 3.1,34^2.0,34 + 3.1,34.0,34^2
d) -(2,67)^3 + (0,67)^3 + 3.2,67^2.0,67 - 3.2,67.0,67^2
a) (0,76)^3 + (0,24)^3 + 3.0,76^2.0,24
b) (1,35)^3 + (0,65)^3 + 3.1,35^2.0,65 + 3.1,35.0,65^2
c) (1,34)^3 - (0,34)^3 - 3.1,34^2.0,34 + 3.1,34.0,34^2
d) -(2,67)^3 + (0,67)^3 + 3.2,67^2.0,67 - 3.2,67.0,67^2