Найдите значение степени: 1) (-7)^2; 2) (-7)^3; 3) (-1/2)^4; 4) (-1/3)^3.

1) (-7)^2=49; 2) (-7)^3=-343; 3) (-1/2)^4=1/16; 4) (-1/3)^3=-1/27.