Tính: (1,5)2; ( -2/3)^3; ( căn 2) ^4.
Tính: (1,5)2; (−23)3; (√2)4.
Ta có: (1,5)2 = 1,5 ∙ 1,5 = 2,25.
(−23)3=(−23)⋅(−23)⋅(−23)=−827.
(√2)4=√2⋅√2⋅√2⋅√2=2⋅2=4.