)(1)(3/2)^-3*(-0.25)^0+3^-3(1)(3/2)^-3*(-0.25)^0+3^-3( 2 ) 2^-1-(3.14-π)^0-(-1)^3(3)(3/2)^-1*(π-2)^0-(-3/2)^2÷(2/3)^-3

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/15 08:11:38

)(1)(3/2)^-3*(-0.25)^0+3^-3(1)(3/2)^-3*(-0.25)^0+3^-3( 2 ) 2^-1-(3.14-π)^0-(-1)^3(3)(3/2)^-1*(π-2)^0-(-3/2)^2÷(2/3)^-3
)(1)(3/2)^-3*(-0.25)^0+3^-3
(1)(3/2)^-3*(-0.25)^0+3^-3
( 2 ) 2^-1-(3.14-π)^0-(-1)^3
(3)(3/2)^-1*(π-2)^0-(-3/2)^2÷(2/3)^-3

)(1)(3/2)^-3*(-0.25)^0+3^-3(1)(3/2)^-3*(-0.25)^0+3^-3( 2 ) 2^-1-(3.14-π)^0-(-1)^3(3)(3/2)^-1*(π-2)^0-(-3/2)^2÷(2/3)^-3
(3/2)^-3 × (-0.25)^0 + 3^-3
= 8/27 × 1 + 1/27
= 9/27
= 1/3
(2) 2^-1 - ( 3.14 - π)^0 - ( -1)^3
= 1/2 - 1 + 1
= 1/2
(3) (3/2)^-1 × (π - 2)^0 - ( -3/2)^2 ÷ (2/3)^-3
= 2/3 × 1 - 9/4 ÷ 27/8
= 2/3 - 9/4 × 8/27
= 2/3 - 2/3
= 0