Ответ:
47.
1) 2⁸=2*2*2*2*2*2*2*2=256 5) (-1/2)⁴= -0.5*(-0.5)*(-0.5)*(-0.5)=0.0625
2) (-5)²= -5*(-5)=25 6) (1/3)³=1/3*1/3*1/3= 1/27
3) 0.8²=0.8*0.8=0.64 7) (2 3/5)²=13/5*13/5=6.76
4) 12²=12*12=144 8) (-1 1/3)³= -4/3*(-4/3)*(-4/3)= -2 10/27
48.
1) (-2)⁴+3³=16+27=43 4) (-0.4)³+(-0.2)³= -0.064-0.008= -0.072
2) (-9)²+(-1)⁷=81-1=80 5) (8³:200-0.4²):(-0.5)=(2.56+0.16):(-0.5)= -5.44
3) 5*(-2/5)³=5*(-8/125)= -0.32 6) (2.6-2.2)³*(-1 3/4)²=(0.4)³*3.0625=0.196